Ошибка при загрузке java tm runtime environment interactive brokers


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Amazon If you use Interactive Broker’s Trader Workstation and you see an error dialog saying Error: could not find Java SE Runtime Environment when you run the TWS Windows shortcut you are in the right place. This article will walk you through fixing this error.

The error dialog looks like the following:

Windows error dialog: could not find Java SE Runtime Environment

Even though this article is related to IB’s TWS Java program it may help you fix the same error that occurs when you run a different Java software application.

Cause of the problem

First of all TWS is a software application written in the Java programming language. It needs the Java runtime environment in order to run.

Right click on the TWS Windows shortcut to examine the actual shortcut. It should be something like this:

C:WindowsSystem32javaw.exe -cp jts.jar;total.2012.jar -Dsun.java2d.noddraw=true -Dswing.boldMetal=false -Dsun.locale.formatasdefault=true -Xmx1024M -XX:MaxPermSize=256M jclient/LoginFrame C:Jts

When you finish installing TWS on your Windows platform, a Windows shortcut is created automatically which points to C:WindowsSystem32javaw.exe. javaw.exe is the Java runtime environment executable. However if C:WindowsSystem32javaw.exe is incompatible with your computer hardware or with TWS program, you will see this error dialog.

Therefore, the root cause of the problem where system cannot find Java runtime environment is that the installed Java runtime environment is incompatible with your system hardware or with the Java program.

Solution

To fix the error that Windows cannot find Java SE runtime environment, simply download and install the latest JRE from the internet. Once you finish installing JRE on your Windows system, you should see the JRE files in C:Program Files (x86)Java.

In my situation I have both jre6 and jre7 folder. Let’s go to jre7 -> bin and I see javaw.exe. The complete path to javaw.exe is:

C:Program Files (x86)Javajre7binjavaw.exe

I copy it to C:WindowsSystem32 to replace the old javaw.exe and run the TWS shortcut again. And it works!

If you don’t know which version of JRE to download, download several of them, and try each one.

Questions? Let me know!

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  1. tried to start TWS this morning,

    got an error message — Could not find Java SE Runtime Environment

    I uninstall and reinstalled Java, to no avail.

    Any clues?

  2. make sure you have the 32 bit java installed

  3. are you running a 32 or 64 Java version and
    did you switch versions recently ?

  4. Had similar issue with the DDE excel to follow is the email from IB
    Edit [months ago not today, as I notice a TWS issue in another thread — not related]

    Thank you for contacting Interactive Brokers.

    As per conversation, the Excel DDE issue that you are describing occurs on computers running on a 64 bit Windows OS.

    Please refer to the instructions below regarding the error message of Excel DDE on TWS:
    1) Uninstall TWS, Java and the API Components then restart computer. (Please go to your Control Panel > Programs and Features to remove: Trader Workstation 4.0, TWS Interoperability Components and all Java components)
    2) Download and install Java 32 bit from the link: http://www.oracle.com/technetwork/java/javase/downloads/jre-6u32-downloads-1594646.html (Please Accept the license agreement and download the file «Windows x86 Offline»)
    3. Download and install TWS through the link: http://download.interactivebrokers.com/download/tws40_install.exe
    4) Confirm where the javaw.exe file is installed. (It should be something like C:WindowsSysWOW64javaw.exe)
    5) Right-click the TWS desktop shortcut, select Properties and go to the Shortcut tab and refer to Target, and point the path or javaw.exe to where it is installed:
    -It should read: C:WindowsSystem32javaw.exe -cp jts.jar;pluginsupport.jar;hsqldb.jar;jcommon-1.0.12.jar;jfreechart-1.0.9.jar;jhall.jar;other.jar;riskfeed……
    -Change it to: C:WindowsSysWOW64javaw.exe -cp jts.jar;pluginsupport.jar;hsqldb.jar;jcommon-1.0.12.jar;jfreechart-1.0.9.jar;jhall.jar;other.jar;riskfeed……
    6) Install the API Components through the link: http://www.interactivebrokers.com/download/InstallAX_966.exe
    7) Log back into TWS and you should not get the error «Ddedll.dll file is missing our out of date…»

    Should you require further assistance please feel free to contact us.

    Kind regards,
    Frankie
    IB Technical Assistance Center

  5. Thanks all for the replies.

    Followed the above instruction and got it working.

    But gosh the new TWS is ugly.

  6. Sometimes something as simple as rebooting the computer will sort the issue. Ensure you have a copy of javaw.exe file sitting in the WindowsSystem32 directory.

  7. I’ve found that JAVA with its regular updates being required, along with TWS, it’s a problematic combination.
    Frequently after a JAVA update I then experience problems getting TWS to run.
    Today I had yet another JAVA update (lost count how many times this has been done over the years) and TWS spat the dummy yet again and wouldn’t run.
    I tried all the uninstalling tricks etc to no avail, TWS still wouldn’t run.

    My solution to the problem is (a) I unticked JAVA updates — so no more of them unless I deem it necessary and then I’ll do it manually, I’m fed up with the continual JAVA circus of updates, (b) uninstalled TWS and now I’m running the web based TWS version.
    Go to: https://www.interactivebrokers.com / LOGIN / Trader workstation Latest

This faq is split into two sections:

Section One addresses TWS-related questions, including:

  • Installing TWS and running the Beta release
  • Updating the production release, logging in
    and using TWS
  • Finding help through the Release Notes, Tutorials,
    the User’s Guide and Customer Service

Section Two addresses
other problems that may affect your TWS session, including
browser, network, system and connectivity issues.

  • Can I run TWS on my system?
  • How do I install TWS?
  • What are the minimum
    system requirements to run TWS?
  • Will TWS run on my
    Macintosh PC or UNIX workstation?
  • Should
    I use the standalone or browser-based version of TWS?
  • How
    do I download and upgrade the Java plugin?
  • What is a beta release, and how
    can I use it?
  • How do I know what changes are
    in a new release?
  • How will I know when a
    new TWS version has been released?
  • How do I reinstall TWS?
  • Why isn’t
    my username recognized?
  • How long does my account
    remain valid?
  • Where do I find more information on
    using TWS?
  • How do I contact Customer Service?
  • Why does my browser either
    not load TWS properly, or close suddenly?
  • Why do I suddenly lose
    my Internet connection?
  • Why won’t the “Trade
    Login” window or system status window come up?
  • Why do I receive the message “Page
    Not Found?»
  • Why won’t my login prompt
    show up?
  • Why is my TWS flashing a magenta
    grid, then trying to log back in again?
  • Why does it say «Logging in,
    Attempt 1, 2, 3 . . .»?
  • Why do I only get a gray
    screen when I log in?
  • Why does it stop on “Processing
    Security Definition Request,” or take a long time
    to log in?
  • Why do I get a “Field n Required” error?
  • Why does my computer shut
    off, or give a blue screen when I run TWS?
  • After logging in, why do I
    only get a tan and black screen?
  • Open the Control Panel
  • Uninstalling programs
  • Download IB software
  • Download from Microsoft
  • Compatible
    network cards
  • Java download instructions
  • How much bandwidth does TWS require?
  • Does TWS use UDP?
  • What types of dial-up services
    are available?
  • What protocols and ports should
    my dial-up ISP allow?
  • I share my internet connection,
    will this work?
  • What types of broadband
    services are available?
  • What protocols and ports
    should my Broadband ISP allow?
  • Special notice with regard
    to Satellite Systems
  • Other providers — will they
    work?
  • What types of direct connection
    are there?
  • DHCP
  • TCP/IP
  • NAT
  • Multiple network
    adapters can be problematic
  • Quality of service has
    a large affect on Internet-based applications
  • Ping
  • Trace Route
  • Does IB support HTTP
    proxies?
  • What type of proxies do you
    support?
  • When I have a problem, how
    do I show you what I’m seeing?
  • I want to delete my cookies.
    Can this cause problems?
  • Determine whether the problem happens on
    only YOUR computer
  • Determine whether the problem happens
    with only YOUR IB account
  • Determine whether the problem happens
    on standalone, browser-based, or both TWS versions

Can I run TWS
on my system?

To ensure that you have an adequate Internet connection
and proper system requirements to run TWS, first run the demo
system.

How
do I install TWS?
Find download instructions and the necessary files
on the Installation
Instructions page.

What
are the minimum system requirements to run TWS?

The table below outlines our suggestions for both minimum and recommended system requirements to run the IB Trader WorkstationSM.

  PC Minimum
Requirements
PC Recommended Requirements Mac Minimum
Requirements
Mac Recommended Requirements
Operating System Windows Vista Windows 7 or higher Mac OSX 10.7 Mac OSX 10.9.5
Browser   Internet Explorer 11.0 and higher
Firefox 32.0 and higher
Chrome 37.0 and higher
  Safari 7.1
Firefox 32.0
Chrome 37.0
Java Oracle Java 6 Oracle Java 7 Oracle Java 6 Oracle Java 7
Screen Resolution 1024 x 768 Dual Screen, 1280 x 1024 1024 x 768 Dual Screen, 1280 x 1024
Processor 2.2GHz Intel Core2 Duo Intel Dual Core Processor
Intel i3 and higher processors
Intel Dual Core Processor Intel Dual Core i3 and higher processors
Memory 2GB Ram (Average Trader) 4GB Ram (Power Trader) 2GB Ram (Average Trader) 4GB Ram (Power Trader)
Internet Connection 56K Dial-up or higher Broadband with Dial-up Backup 56K Dial-up or higher Broadband with Dial-up Backup
  Linux/Unix Minimum
Requirements
Linux/Unix Recommended Requirements    
Operating System Kernel 2.6 Kernel 3.0 or higher    
Browser   Firefox 32.0
Chrome 37.0
   
Java Oracle Java 6 Oracle Java 7    
Screen Resolution 1024 x 768 Dual Screen, 1280 x 1024    
Processor 2.2GHz Intel Core2 Duo Intel Dual Core
i3 and higher processors
   
Memory 2GB Ram (Average Trader) 4GB Ram (Power Trader)    
Internet Connection 56K Dial-up or higher Broadband with Dial-up Backup    

Will
TWS run on my Macintosh PC and UNIX workstation?
You can run TWS on a Mac
OS X machine and on a UNIX workstation.

Should
I use the standalone or browser-based TWS?
If you have a slower computer or Internet connection,
we recommend that you use the standalone version of TWS. If
you use the browser-based version, you can access TWS from
any internet PC. The standalone version can only be accessed
from the PC on which you installed the application. Otherwise,
both require that you install the latest Java Runtime Environment
and both function the same way.

How
do I install/upgrade the Java plugin?

Go to the Java
Upgrade Instructions page and select the Windows or Mac
operating system. Follow instructions for upgrading the Java
plugin. Note that if you want to upgrade to a newer Java
version, you must first remove the existing plugin and then
reinstall the upgraded version.

What
is a beta release, and how can I use it?

The beta release is an pre-production version of an upcoming release that
allows you to actively trade while you test new features. You must deliberately
elect to use the beta at your own risk when you log in. Since the beta is
under construction until production release, we welcome your input on its
performance. The beta will be promoted to production after it has been tested
both in-house and externally over a specified time period.

How do
I know what changes are in a new release?

The login page includes links to both the beta and production release notes.
These notes briefly describe new features and problems that have been fixed.

How will I know when
a new TWS version has been released?
If you are running the standalone version, the update
wizard will automatically check for TWS updates each time you
log in to your PC. You can also manually check for updates
from the Start menu by selecting Programs and
then Startup and clicking Check for TWS Updates. Customers
running the browser-based version will always get the most
recent production release when they log in.

How do I
reinstall TWS?
First, uninstall TWS by going to add/remove
programs and removing TWS. You can then reinstall TWS
from the TWS Software page.

Why
isn’t my username recognized?

You will receive this message for one of the following reasons:

  • You are not entering the proper username (check
    to be sure the Caps Lock key isn’t on)
  • Your account has not been set up yet
  • You’ve entered your password incorrectly more
    than 10 times

Where
can I find more information on using TWS?

Instant help resources include the TWS Release Notes, TWS User’s Guide, and
the online tutorials. If you still cannot find an answer to your question,
contact Customer
Service.

Who do I
contact for help?
IB has two distinct departments that handle specific
types of TWS questions. Customer service deals with
everything involving trading, accounts, funding and execution.
See the Customer
Service page on the IB website for contact details. The
Technical Assistance Center (TAC) can help you with issues
concerning your connection to IB and problems with the software
involved. To help you more quickly, please:

  • Call while you are experiencing the problem
  • Have your computer turned on
  • and ready to troubleshoot

  • Have your account information ready

In the US, call 877-442-2757 during regular
business hours for support. The following options are available:

Press

To reach:

For

0

Customer Service

Account, Trading, Product
or Order Information

1

Backup Trader

Getting out of a position only.

2

Trade Information

Information on orders or executions

3

Funds and Banking

Funding, Balance, or Account
(monetary) questions

4

Technical Assistance

Assistance with computer or
software installation problems

You can also email us at tac@interactivebrokers.com. Please
include the following information:

  • Your username and account number
  • A detailed summary of the problem
  • A timeframe of when the problem occurred
    or occurs.
  • Detailed system specifications if possible,
    including:

    • the Windows version you are using
    • the version of Internet Explorer or
      Netscape (include cipher strength)
    • the brand names of any Network Interface
      Cards installed in the computer
    • your processor generation and speed
    • the amount of memory installed in your
      computer
    • the type of Internet connection you
      are using
    • any other troubleshooting you have done
      on your own or with our staff

You may experience problems with TWS if you are running
the software below the minimum requirements. When troubleshooting
problems, start by making sure that your computer meets our
minimum system requirements.

Why does my browser either
not load TWS properly, or close suddenly?
A) This may be a problem with Java.

  • Remove all instances of Java.
  • Follow the Direct-download instructions.

B) Your browser may be outdated or corrupt.

If you are using Netscape:

  • Uninstall Netscape
  • Download Netscape Again

If you are using Internet Explorer:
Check the version you are using. To check the
version, on the Help menu click About.

  • If you are using a version lower than 6.0, upgrade.
  • If you’re using IE 6.0 or higher, repair
    the install.

Why do
I suddenly lose my Internet connection?

A. Your Internet connection may drop off due to connectivity or Internet
Service Provider (ISP)-based issues.

Consult our connectivity
FAQ
if you suspect if this is an issue.

B. This problem has also been known to occur
with problematic Ethernet cards.

Please consult our list of known compatible
Network Cards.

Why won’t the “Trade Login”
window or system status window come up?
If you’ve installed software that prevents web window pop-ups,
you will need to disable this software or allow permission for these windows
to open. For more information on this topic, consult the documentation for
the software that prevents pop-ups.

Why do I receive the message “Page
Not Found?»
This problem is typically caused by running previous versions of
Internet Explorer or Netscape. You should use IE 5.5 or Netscape 4.77 with
128 bit encryption. If you have Windows 2000, encryption is part of the operating
system and requires additional upgrades. In addition to the browser, you will
need to do one of the following upgrades: Windows 2000 high encryption pack,
or Windows 2000 Service Pack 2. Installation of either of these updates will
upgrade the operating system’s encryption. Microsoft’s upgrades
can be acquired here. Netscape can be downloaded
from this link.

Why won’t my login prompt show up?
This may be due to a corrupted or improper install of TWS or the
Java Applet.

  1. Remove all
    instances of Java and Trader Workstation.
  2. Follow the Java Direct-download
    instructions
  3. Download a new version of TWS.

Outdated or corrupted browsers can cause this to occur. If you are using Netscape:

  1. Uninstall Netscape
  2. Download Netscape
    again

If you are using Internet Explorer:

  • If you are using a version lower than 6.0, upgrade
  • If you’re using 6.0 or higher, repair the install

Or, your browser display settings may be preventing you from viewing the entire
screen.

  • Using the “view” menu in your browser,
    set your font size to the smallest setting.

Your browser’s cache may have a problematic page stored in it.

  • Hold down the “ctrl” key and hit “Refresh” at
    the top of your browser. This will force the page to reload
    from the server.

Dial-in customers or customers with a poor connection may periodically experience
problems loading an applet through a browser. Browser download and installation
of applets tend to stall on slower connections.

  • Using standalone TWS will bypass this problem
    entirely.

You may be using a problematic Ethernet card.

  • Consult our list of compatible
    network cards to see if your card is included.

Why is my TWS flashing a magenta grid,
then trying to log back in again?
This typically occurs if:

  • The connection to IB is interrupted
  • You are trying to log on more than once,
    or have duplicate login sessions. Verify that there is
    only one instance of either TWS or MobileTrader running
    for your account. If you continue to experience this problem,
    consult our Network FAQ.

Why does it say «Logging in, Attempt
1, 2, 3 . . .»?
This indicates that you are having a problem with the workstation
getting to our servers. After it says “attempt 3” press “cancel”.
This will give you a detailed error message that you can troubleshoot below.

Message Description
Unknown Host: Java.net This indicates a problem with
DNS and your Internet Provider.
No Route to Host This indicates a problem with
routing to IB over the Internet, from your machine.
Winsock or Socket Exception This indicates that the computer
is having a problem creating an outbound socket to our
server.
Connection Timed Out This is a generic error you
receive when a connection attempt times out in transit.

For any of these errors, consult our Network FAQ.

Why do I only get a gray screen when
I log in?
This may happen for a variety of reasons. Try the following:

  • Wait. It may take several minutes to complete
    loading the trading pages, depending on the number of pages
    and symbol population on the pages and your speed of connection.
    Clean out ticker symbols and pages that you no longer require.
  • Reconnect to the Internet
  • Check your network connection for problems.
  • Make sure your system has the proper minimum
    system requirements.
  • In the case that your user preference files
    may have become corrupt, contact Technical
    Assistance for help in resetting the information.
  • A corrupt Java installation will cause this
    to occur. To verify that this is the problem, go into
    the control panel and double-click on the Java plug-in. The
    same gray screen will result if the plug-in is corrupt. If
    this happens, uninstall and reinstall Java.

Why does it stop on “Processing
Security Definition Request,” or take a long time to log in?
This may happen for a couple of reasons. Try the following:

  • Wait. It may take several minutes depending
    on the amount of information and speed of connection. If
    this is the case, clean out symbols and pages that you
    no longer require.
  • Make sure your system has the proper minimum
    system requirements.

Why do I get a “Field n
Required” error?
This indicates there is a problem with your network connection. Refer
to our Network FAQ and your system Administrator to check for latency and
network problems.

Why does my computer shut off, or give
a blue screen when I run TWS?
This may be the result of a problematic Ethernet card, or improper
driver installation of display adapters. Download the latest version of your
video drivers and consult our list of compatible network cards.

After logging in, I only get a tan and
black screen.
This occurs when the page file becomes corrupt from a disk error.
Please consult our Page File FAQ for information on how to manipulate this
file.

How do I open the control panel?
To open the Control Panel, click Start, then select
Settings>Control Panel.

With Windows XP, click Start>Control
Panel
.

Depending on the version of Windows you are
using, its appearance may vary slightly from what we
describe.
TOP

How do I uninstall software?

If you need to uninstall software, you should only do it from Add/Remove Programs
window accessible from the Control Panel. Use this window to remove Netscape,
Trader Workstation or Java, or repair Internet Explorer. When you uninstall

a program, you will usually get a confirmation message ensuring that you do
indeed want to remove the item that you have selected.

Note: Java does not support automatic
upgrades. Before you upgrade Java, you must uninstall the current version.

Important: If you are uninstalling
for reinstall purposes, Windows may ask you to restart
your computer. DO NOT IGNORE THIS REQUEST. Shut down
and restart your computer to allow files to be unlocked
and removed from memory.

How do I download TWS and other applications
from Interactive Brokers?

On the Software menu on the IB website, select from TWS,
API or the Toolbox.

How do I download from Microsoft?
Whether you’re downloading an encryption upgrade, a new browser or a
service pack, all official Windows upgrades can be acquired from http://windowsupdate.microsoft.com/,
shown above. Click on the “products update” link on the left-hand
side, select the updates you wish to install, and follow the instructions.

Compatible Network
Cards
The following is a list of network card
(NIC) manufacturers whose cards IB customers have confirmed work with our
software:

  • 3-com/Megahertz
  • D-link
  • Intel/Xircom
  • Kingston
  • Realtek

Java Download instructions

  1. Go to the java.sun.com website.
  2. On the right side of the page under Popular Downloads, click «Java
    SE
    »
  3. Where it reads JDK 6 Update 5, Click on Download
  4. Read the license terms and conditions and click «Accept
  5. Click the download link.
  6. In the «Save As» window, save the file
    to your desktop.
  7. Once the download is complete, return to your Desktop and double- click
    on the «jdk-6u5-windows-i586-p.exe» icon
    to install the Java plugin.
  8. Read the «Software License Agreement» and
    click «Yes» to continue.
  9. Choose the default destination and click «Next» to
    install the Java program.
  10. Installation is complete. You can now run the Java-based Trader
    Workstation 4.0.

Note: If you are running a non US-English version of Windows,
you need to install the international plug-in.

How much bandwidth does TWS require?
Depending on the amount of data you are receiving (number of ticker
symbols entered) most TWS sessions will function properly on a reliable 33.6
connection. However, the use of other network applications while you are using
TWS may slow down your connection.

Does TWS use UDP?
TWS does not use any UDP.

What types of dial-up services are available?
Dial-up Internet is available in two varieties: 56k dial-up (also
known as a standard ISP connection) and Dial-up ISDN. The two are similar
in that they use a telephone line and a modem to dial in to an Internet service
provider. They are carried on different types of lines and use different types
of modems. 56k dial-up is primarily used in the home, whereas 64k and 128k
ISDN are commonly used in business applications. Availability of different
services may be limited in certain areas; contact service providers in your
area for a list of available services.

What protocols and ports should my ISP
allow?
TWS connects to our servers via port 4000 using a source port in
the publicly addressable space above port 1024. Our servers listen on port
4000; TWS will not function on any other port. For users behind firewalls,
the installed version includes provisions for using a specified outbound port.
Both inbound and outbound ports need to be permissioned for TWS to function
properly.

I share my Internet connection, will this
work?
TWS will function in a shared environment, provided that a reliable
connection exists. The connection that a TWS machine receives must have sufficient
bandwidth to operate. Users should take care when using NAT (Network Address
Translation) and DHCP. While TWS will work if NAT and/or DHCP are configured
properly, data loss and unpredictable behavior can result from improper configurations.
For more information on NAT and DHCP,
review the section below on those topics.

What types of broadband services are
available?
There are many types of broadband available. Cable, xDSL, Corporate
Networks (T1, T3, Frac-T), Dial-on-demand ISDN and Satellite are all broadband
solutions. All of these services provide much higher throughput (compared
to a dial-in line) and typically use routers or special modems to become part
of a hardwired network. Some services emulate this method rather than actually
performing this way. Availability of different services may be limited in
certain areas; contact vendors in your area for a list of available services.

What protocols and ports should my
broadband ISP allow?
As with dial-up, TWS connects to our servers via port 4000 using
a source port in the publicly addressable space above port 1024. Our servers
listen on port 4000; it will not function on any other port. For users behind
firewalls, the installed version of TWS includes provisions for using a specified
outbound port.

Special notice with regard to Satellite
Systems:
Testing with these systems has proved inconclusive. Some
satellite providers list trading software (or anything that requires a reliable
connection) as an “at your own risk” practice. Customer feedback
has indicated that satellite services are sometimes unreliable.

How do I know if a provider I choose
will work with TWS?
As with any type of connection, be sure the provider allows TCP/IP
routing with open access to Internet service ports. TWS connects to our servers
via port 4000 using a source port in the publicly addressable space above
port 1024. Our servers listen on port 4000; it will not function on any other
port. For users behind firewalls, the installed version of TWS includes provisions
for using a specified outbound port.

What types of direct-connect or leased
line solutions are available?
For the ultimate in reliability, speed and security, some customers
choose to install a dedicated connection to our servers via leased line or
frame relay interface. Please contact
an IB sales representative about leased-line connections.

Services and Protocols Be
aware of the protocols and network devices that may affect you. The following
is information about your TWS connection that you or your Network Administrator
will want to know when troubleshooting your connection to us.

  • DHCP
    (Dynamic Host Configuration Protocol) is a way of
    automatically assigning IP addresses. If your DHCP
    server is assigning a private address (addresses
    which are not associated with the Internet) the server
    may be doing NAT (Network Address Translation) to
    get to the outside Internet Depending on the particular
    configuration, the router or server may be trapping
    requests from our server to your computer.
  • TCP/IP
    is the basic protocol from an Internet service provider. This,
    along with DNS (Dynamic Name System) and basic socket
    access are all that is required for a “functioning
    Internet connection” and for running TWS software.
  • NAT
    (Network Address Translation) is one of the basic
    components behind home routers (and some professional
    private routers). Done properly this should be transparent;
    the address on the outside should translate to your
    internal (non-Internet) addresses without your PC
    knowing the specifics of the routing.
  • IB
    accepts connections on port 4000 from inbound traffic
    from ports 1024 or higher. This is required for
    connection to our servers. If you are using a firewall,
    these ports will need to be provided for within its
    configuration. Contact your network administrator
    for more information.

Multiple network adapters
can be problematic
Extraneous network adapters and drivers which are not connected,
are inoperative or unnecessary should be removed from your system. These can
cause unpredictable network behavior.

  • AOL and other proprietary adapters
    may work fine if you have the service and are actively
    using it. If, however you are not using the adapter,
    it may be configured improperly and has been known
    to cause connectivity issues.
  • NDSWAN and other VPN adapters can
    be problematic if they are not in use. PPPOE (Point
    to Point Protocol Over Ethernet) may be used in some
    DSL or Cable connections; if it is not used, it may
    cause problems with the connection, and should be
    removed.
  • Certain brands of ethernet cards
    are known to have problems with their drivers and
    the way they address memory. Please refer to our compatible network card list for further information.
  • Client for Netware Networks and
    IPX/SPX are protocols used in corporate Novell Networks. If
    this protocol is not needed, it should be removed.
  • NETBEUI is a Microsoft Protocol
    that, as above, may be in use in a corporate network. If
    it is not in use, it is better to remove this adapter

Important: If you are not sure about any of the adapters in
your Network settings, consult your network administrator before removing
them.

Quality of service has a large
affect on Internet-based applications
Latency due to physical distance from your ISP, routing within your
ISP’s network, packet loss and many other factors can affect the reliable
operation of your TWS. Please review the connectivity troubleshooting tips
below to test the quality of your connection.

Does
IB support HTTP proxies?
Not for TWS. IB does support HTTP proxies
for Web Trader, but this application has limited capabilities.

What type of proxies do you support?
IB supports proxies that can emulate open sockets.

There are some basic commands that can be used
from a DOS prompt to get more information on your connection
to a remote host. To get to a DOS prompt, go to start and
click on run. If you are using Windows 95, 98, or ME, type “command”. If
you are using Windows NT, 2000, or XP, type “cmd”. Hit
OK to enter the DOS window. From here, you can try the following
to test your connection:

Ping
The Ping command will test the quality and latency of your connection. If
it shows 4 round-trip reports without a reply (does not say not found, timed
out, etc.) your connection is healthy. To use this, type ping gw1.ibllc.com
at the command prompt. A healthy ping should look as follows:

Pinging gw1.ibllc.com [208.245.107.3] with 32 bytes of data:
Reply from 208.245.107.3: bytes=32 time<10ms TTL=254 Reply from 208.245.107.3:
bytes=32 time<10ms TTL=254 Reply from 208.245.107.3: bytes=32 time<10ms
TTL=254 Reply from 208.245.107.3: bytes=32 time<10ms TTL=254

If the ping results show excessive latency (>500ms), timeouts/packet loss,
or no replies, a network problem exists between you and the IB network.

Trace Route
The tracert command is used to isolate routing issues. This will show you
all of the “hops” from your connection to our network. A timeout,
indicated by “*” or time above 200, indicates a slow or dead hop
and may be a problem. Over 15 hops can also be a problem.

To look at a traceroute, type tracert gw1.ibllc.com at the
command prompt.

The following are sample traceroutes. Included is an explanation and
suggested course of action.
This traceroute is an example of a healthy
connection. The ping times and the number of hops are low (lower is better).
No course of action required.

1 gatekeeper (206.42.160.1) 1 ms 1 ms 2 ms
2 jfk-edge-19.inet.qwest.net (63.237.128.53) 19 ms 26 ms 21 ms
3 jfk-core-03.inet.qwest.net (205.171.30.189) 22 ms 19 ms 24 ms
4 ewr-core-03.inet.qwest.net (205.171.5.89) 20 ms 19 ms 20 ms
5 ewr-brdr-01.inet.qwest.net (205.171.17.98) 20 ms 26 ms 19 ms
6 205.171.1.122 (205.171.1.122) 30 ms 20 ms 22 ms
7 sl-bb23-nyc-3-0.sprintlink.net (144.232.7.109) 20 ms 19 ms 19 ms
8 sl-bb22-pen-6-0.sprintlink.net (144.232.9.18) 25 ms 37 ms 21 ms
9 sl-bb26-pen-9-0.sprintlink.net (144.232.16.58) 21 ms 26 ms 22 ms
10 sl-gw26-pen-4-0-0.sprintlink.net (144.232.5.190) 24 ms 23 ms 24 ms
11 sl-thllc-4-0-0.sprintlink.net (144.232.190.222) 35 ms 31 ms 29 ms
12 206.106.137.111 (206.106.137.111) 28 ms 28 ms 30 ms

This is an example of a marginal connection. The
ping times and number of hops are fairly high, but the connection
should still be usable. Contact your ISP to see if this is
a common occurrence. If this is what you can expect, you may
want to shop around for another provider. Higher times indicate
line latency (slowness) and the high (17) number of ‘hops’ results
in a higher potential for outage, in the event that one of
the providers involved experiences a problem.

1 195.130.108.1 (195.130.108.1) 3.258 ms 2.325 ms 2.32 ms
2 athens-teiath-ATM.grnet.gr (194.177.209.149) 3.894 ms 3.546 ms 2.935 ms
3 athens-2-athens.grnet.gr (194.177.210.226) 3.299 ms 4.549 ms 13.643 ms
4 grnet1.uk1.uk.geant.net (62.40.103.181) 78.624 ms 72.213 ms 73.457 ms
5 uk.se1.se.geant.net (62.40.96.125) 104.912 ms 105.978 ms 104.695 ms
6 so-6-0-0.ar2.CPH1.gblx.net (208.48.23.153) 142.148 ms 115.03 ms 114.235 ms
7 so2-1-0-622M.cr2.CPH1.gblx.net (62.12.32.77) 113.658 ms 116.135 ms 114.903 ms
8 pos1-0-2488M.cr2.LON3.gblx.net (195.8.96.181) 134.768 ms 138.151 ms 132.05 ms
9 pos1-0-622M.br1.LON3.gblx.net (195.8.96.189) 130.876 ms 131.726 ms 134.405 ms
10 sl-bb21-lon-5-0.sprintlink.net (213.206.131.25) 132.904 ms 131.369 ms 134.111 ms
11 sl-bb20-msq-10-0.sprintlink.net (144.232.19.69) 209.434 ms 212.069 ms 209.79 ms
12 sl-bb20-nyc-11-3.sprintlink.net (144.232.9.102) 215.735 ms 208.302 ms 207.316 ms
13 sl-bb20-pen-10-0.sprintlink.net (144.232.18.37) 400.633 ms 352.33 ms 274.419 ms
14 sl-bb25-pen-8-0.sprintlink.net (144.232.5.174) 212.023 ms 215.237 ms 215.472 ms
15 sl-gw26-pen-0-0-0.sprintlink.net (144.232.5.186) 213.755 ms 212.104 ms 211.378 ms
16 sl-thllc-4-0-0.sprintlink.net (144.232.190.222) 218.742 ms 221.021 ms 217.51 ms
17 206.106.137.111 (206.106.137.111) 218.028 ms 222.549 ms 218.867 ms

The next example shows a network outage. The
connection fails between hop 8 and 9. In the event that this
occurs, you should contact your ISP and give them this information. These
types of outages are very obvious and are the easiest for an
ISP to troubleshoot.

1 kauge.aso.ee
(195.80.96.219) 0.432 ms 0.323 ms 0.357 ms
2 uninet-gw.aso.ee (195.80.96.211) 1.094 ms 7.688 ms 2.332 ms
3 194.204.4.161 (194.204.4.161) 1.489 ms 1.403 ms 1.425 ms
4 kista-atm.uninet.ee (193.229.72.105) 135.413 ms 129.594 ms 136.073 ms
5 Pos5-0.GW7.STK3.ALTER.NET (146.188.34.13) 141.723 ms 140.031 ms 122.782 ms
6 so-3-0-0.XR2.STK3.Alter.Net (146.188.5.37) 113.354 ms 98.346 ms 90.857 ms
7 ge-1-0-0.TR1.STK2.Alter.Net (146.188.11.242) 94.762 ms 115.168 ms 130.034 ms
8 so-4-0-0.IR1.DCA4.Alter.Net (146.188.5.197) 257.747 ms 288.965 ms 255.057 ms
9 request timed out * * *
10 request
timed out * * *
11 request
timed out * * *
12
request timed out * * *

The last example is possibly the hardest to troubleshoot
and the most frustrating. The occasional timeout (marked with
*s) appears several places in the traceroute. This indicates
that intermittent packet loss is taking place. These types
of errors are elusive and may not have been reported yet. Contact
your ISP about this issue.

1 <10 ms <10 ms 10 ms 206.106.137.1
2 <10 ms 10 ms 10 ms sl-gw26-pen-5-0-1.sprintlink.net [144.232.190.21]
3 <10 ms 10 ms <10 ms sl-bb25-pen-0-7.sprintlink.net [144.232.5.185]
4 <10 ms * <10 ms sl-bb21-pen-8-0.sprintlink.net [144.232.5.237]
5 <10 ms 10 ms 10 ms sl-bb23-rly-0-0.sprintlink.net [144.232.20.32]
6 10 ms 10 ms * 144.232.20.44
7 10 ms 10 ms 10 ms sl-ameronl-14-0.sprintlink.net [144.223.246.14]
8 10 ms 10 ms 10 ms bb1-ash-P1-0.atdn.net [66.185.139.209]
9 10 ms 10 ms 10 ms bb1-dtc-P0-2.atdn.net [66.185.152.114]
10 10 ms 10 ms 10 ms pop1-dtc-P14-0.atdn.net [66.185.140.6]
11 * 10 ms 10 ms ow3-dtc-P0-0.atdn.net [66.185.144.254]
12 10 ms 10 ms 10 ms ow1-dtc-P9-2.aol.com [205.188.131.218]
13 10 ms 10 ms 10 ms www2-dr6-P0-0.aol.com [205.188.172.126]
14 * * * Request timed out.

When I have a problem, how do I show
you what I’m seeing?
Create a snapshot of your computer screen and e-mail it to IB.

  1. Launch the window that you want to capture,
    and press Alt + PrtScrn (Print Screen). You can’t tell, but
    you’ve just captured a picture of your screen.
  2. Open a new MS Word document, put your cursor
    on the page and select «Paste.»
  3. Name and save the file, and send it to IB
    Customer Service as an attachment, along with a detailed
    verbal description of your support issue.

I want to delete my cookies. Can this
cause problems?

We do not recommend deleting cookies. Windows issues a warning before deleting
cookies because of data loss that can occur. Deleting them will produce side
affects and must be done at your own risk.

Restarting your computer and networking hardware will
reduce the possibility that you’re having a problem
locally. Please shut down your computer, restart (turn
off and turn back on) any router or modem (ISDN, DSL, Cable,
Satellite) and turn the PC back on before contacting support
about a technical issue. This is a suggested fix for most
broadband providers and has been known to fix simple end-computer
errors.

Is this a problem with only your computer?
Try logging in and testing with another computer that you know works
(with the same account) to see if the problem is the same on both computers.

Does this only happen with your account?
If you have multiple Accounts, try another one of your accounts on
your machine. If you don’t have a second account, try using our demo
system, or having a friend try their account on your machine will help to
determine if there is a common issue among accounts (or systems) and where
that problem may be.

Does your problem occur with both the
standalone and the browser-based versions?
Trying both systems may indicate that the problem is with a component
installed on your computer or somewhere else.

Overview: 

Trader Workstation (TWS) – это многофункциональная система для торговли по всему миру. Программа доступна на Windows, Mac OS X и Linux, и для ее работы требуется среда выполнения для Java (JRE). Поэтому при установке TWS программа также устанавливает необходимые файлы Java для работы с помощью виртуальной машины Java (JVM).

Иногда во время установки или обновления TWS некоторые программы (например, антивирус) показывают предупреждение об угрозе и блокируют операцию. В таком случае предупреждение можно проигнорировать и завершить установку торговой платформы.

Содержание

Скачивание установщика и обновлений TWS

Программы установки TWS, доступные на страницах ibkr.com или региональных филиалов IBKR, защищены цифровыми подписями по всем правилам безопасности и отраслевым стандартам и не содержат вредоносный код или ПО. Эти же правила соблюдаются при создании обновлений для TWS, которые скачиваются и устанавливаются автоматически при запуске платформы (если есть доступное обновление). Однако в случае появления предупреждения рекомендуется проявить осторожность. Если Вы хотите сохранить установочный файл на своем компьютере, убедитесь, что для него действуют те же меры предосторожности для защиты от вирусов и вредоносных программ.

Почему при установке или обновлении TWS отображается предупреждение?

На экране может отобразиться предупреждение (например, как на изобр. 1), и система защиты Вашего компьютера будет ожидать Вашего решения в отношении подозрительного файла. Обычно Вы можете поместить файл на карантин, удалить его, проигнорировать или создать для него исключение.

Обратите внимание, что антивирус может автоматически поместить на карантин или удалить установочный файл TWS или некоторые его элементы, не запрашивая разрешение и без предупреждения. Это может произойти только если Вы специально задали такие настройки для антивируса.

Изобр. 1

Что делать, если антивирус выдает предупреждение?

Если при установке или обновлении TWS на экране отобразилось предупреждение, выполните следующие шаги:

1. Удалите установочный файл TWS и снова скачайте его с сайта IBKR.

a) Удалите уже скачанный файл для установки TWS, в том числе из корзины (очистите корзину).

b) В таблице ниже выберите свой регион и щелкните по соответствующей ссылке для скачивания установочного файла.

c) Проверьте сертификат безопасности сайта. Большинство браузеров сразу оповещают пользователя в случае, если сертификат сайта недействителен, ненадежен или истек. Однако если Вы хотите вручную проверить надежность сертификата, щелкните по замку рядом с адресом (URL) сайта и убедитесь, что Подключение является безопасным, а предупреждения системы безопасности отсутствуют (изобр. 2).

Изобр. 2

d) Нажмите на кнопку с версией TWS, которую Вы хотите установить, и снова скачайте файл установки TWS.

2. Проверьте цифровую подпись установочного файла TWS, который Вы скачали.

Как правило, если сертификат подписи недействителен, на экране автоматически высветится предупреждение. Однако же если Вы хотите проверить подпись вручную, выполните следующие шаги в зависимости от Вашей операционной системы:

На Windows

a) В проводнике Windows откройте папку Загрузки или ту папку, где хранится установочный файл TWS.

b) Правой кнопкой мыши щелкните по установочному файлу TWS, выберите Свойства и затем перейдите на вкладку «Цифровые подписи«.

c) Нажмите на кнопку «Сведения» (Details) и затем «Просмотр сертификата» (View Certificate), чтобы проверить статус сертификата и автора подписи. Автором должна быть «IB Exchange Corp.» ( изобр. 3).

Изобр. 3

На Mac OS X

a) Нажмите на увеличительное стекло (поиск Spotlight) в правом верхнем углу экрана и введите «Терминал». Запустите найденное приложение «Терминал».

b) Введите «cd Downloads» и нажмите Enter.

c) Введите «codesign -dv —verbose=4 tws-latest-macosx-x64.dmg» и нажмите Enter. Обратите внимание, что имя файла (tws-latest-macosx-x64.dmg) может отличаться в зависимости от скачанной версии TWS. При необходимости замените имя файла в командной строке на нужное.

d) Просмотрите результаты команды и убедитесь, что в строке о разработчике приложения «Developer ID Application» указано «IB Exchange Corp.» ( изобр. 4).

Изобр. 4

 

3. Запустите установочный файл TWS, который Вы скачали.

После того как Вы скачали установщик TWS и проверили подлинность файла (пункты 1 и 2 выше), Вы можете начать установку. Если при этом на экране появится предупреждение антивируса, то можно полагать, что оно является ошибочным, и его можно проигнорировать. Если Вам нужна помощь с выполнением этого шага, перейдите к следующему разделу.

Как отметить предупреждение как ошибочное?

Все современные системы защиты позволяют создавать исключения именно на случай ошибочно положительных результатов. Исключение – это правило, которое говорит антивирусу не сканировать данный файл или операцию. Таким образом, данный файл или операция будут считаться безопасными, и предупреждение отображаться не будет.

Шаги для создания исключения зависят от антивирусной программы. Возможно, Вы можете создать временное или постоянное исключение напрямую во всплывающем окне предупреждения или вручную создать такое исключение в настройках программы.

Подробные инструкции можно узнать в документации к Вашему антивирусу.

Если Вы создадите исключение для установочного файла и обновлений TWS, то антивирус больше не будет блокировать эти операции, и они смогут завершиться.

Как убедиться, что мой компьютер надежно защищен?

Если Вы считаете, что Ваш компьютер под угрозой или заражен вирусом, рекомендуем выполнить полное сканирование системы. Как правило, чтобы запустить полное сканирование системы, достаточно щелкнуть правой кнопкой мыши по иконке антивируса на панели задач внизу экрана (на Windows) или в строке меню в верху экрана (на MacOS). Сканер также можно запустить в главном окне антивирусной программы. Подробные инструкции можно узнать в документации к Вашему антивирусу.

Дополнительная информация

Как антивирус сканирует файлы, которые я скачиваю из интернета?

Современные антивирусные программы распознают угрозу безопасности на основании следующих факторов:

Проверка сигнатур: антивирус ищет определенную последовательность байтов, которая была ранее зарегистрирована как угроза. Антивирус также может сопоставить подписи файлов («хэш») с базой данных известных вредоносных программ (т.н. «вирусных сигнатур»).

Анализ поведения: антивирус выявляет определенные операции, которые по отдельности не представляют угрозу, но в совокупности похожи на поведение вредоносной программы (например, код способен создавать собственные копии или становиться невидимым, скачивать дополнительные файлы из интернета, связываться со внешними хостами, изменять реестр операционной системы). Данный тип сканирования призван обнаруживать ранее неизвестные угрозы.

Эвристический анализ: сканер декомпилирует код или запускает его в вирутальной ограниченной среде. Затем он группирует и сопоставляет операции, выполненные кодом, с заранее заданным набором правил безопасного поведения.

Облачная защита и машинное обучение: данные технологии являются более новыми методами защиты. Анализируемый файл отправляется в облако антивирусной программы, где сложные алгоритмы проводят глубокий анализ подлинности и поведения кода.

Могут ли данные методы сканирования допускать ошибки?

Современные вирусы являются очень сложными программами и, как и биологические вирусы, могут мутировать, изменяя свой код и сигнатуры. Кроме того, постоянно появляются и распространяются новые вредоносные и хакерские программы. Поэтому перечисленные методы сканирования могут допускать ошибки, но в сочетании обеспечивают высокий процент обнаружения вирусов.

Хотя технологии, основанные на выявлении сигнатур, хорошо работают для обнаружения уже известных вирусов и редко дают ложноположительные результаты, они неэффективны для поиска новых или мутировавших вирусов. В таких случаях более эффективными являются анализ поведения и эвристический анализ, хотя они чаще дают ложноположительные результаты, поскольку они не просто сверяют код, а также его интерпретируют, что может приводить к ошибкам.

Термин «ложноположительный результат» означает, что антивирусная программа расценивает безвредный файл или операцию как вирус.

Справка:

  • Ознакомиться с рекомендациями по безопасности для клиентов IBKR можно по этой ссылке.
Icon Ex Номер ошибки: Ошибка 4
Название ошибки: Runtime Environment Error 4 Connection Broken
Описание ошибки: Ошибка 4: Возникла ошибка в приложении Java Runtime Environment. Приложение будет закрыто. Приносим извинения за неудобства.
Разработчик: Oracle Corporation
Программное обеспечение: Java Runtime Environment
Относится к: Windows XP, Vista, 7, 8, 10, 11

Определение «Runtime Environment Error 4 Connection Broken»

«Runtime Environment Error 4 Connection Broken» обычно является ошибкой (ошибкой), обнаруженных во время выполнения. Программисты, такие как Oracle Corporation, стремятся создавать программное обеспечение, свободное от этих сбоев, пока оно не будет публично выпущено. К сожалению, многие ошибки могут быть пропущены, что приводит к проблемам, таким как те, с ошибкой 4.

Некоторые пользователи могут столкнуться с сообщением «Runtime Environment Error 4 Connection Broken» при использовании Java Runtime Environment. Таким образом, конечные пользователи предупреждают поставщиков о наличии ошибок 4 проблем, предоставляя информацию разработчику. Затем программисты могут исправить эти ошибки в коде и включить исправление, которое можно загрузить с их веб-сайта. Следовательно, разработчик будет использовать пакет обновления Java Runtime Environment для устранения ошибки 4 и любых других сообщений об ошибках.

Что вызывает ошибку 4 во время выполнения?

Наиболее распространенные вхождения «Runtime Environment Error 4 Connection Broken» проблемы при загрузке Java Runtime Environment. Причины сбоев обработки можно отличить, классифицируя ошибки 4 следующим образом:.

Ошибка 4 Crash — это типичная ошибка «Runtime Environment Error 4 Connection Broken», которая приводит к полному завершению работы программы. Это возникает, когда Java Runtime Environment не работает должным образом или не знает, какой вывод будет подходящим.

Утечка памяти «Runtime Environment Error 4 Connection Broken» — если есть утечка памяти в Java Runtime Environment, это может привести к тому, что ОС будет выглядеть вялой. Это может быть вызвано неправильной конфигурацией программного обеспечения Oracle Corporation или когда одна команда запускает цикл, который не может быть завершен.

Ошибка 4 Logic Error — Компьютерная система создает неверную информацию или дает другой результат, даже если входные данные являются точными. Это видно, когда исходный код Oracle Corporation содержит недостаток в обработке данных.

Oracle Corporation проблемы файла Runtime Environment Error 4 Connection Broken в большинстве случаев связаны с повреждением, отсутствием или заражением файлов Java Runtime Environment. Большую часть проблем, связанных с данными файлами, можно решить посредством скачивания и установки последней версии файла Oracle Corporation. Кроме того, некоторые ошибки Runtime Environment Error 4 Connection Broken могут возникать по причине наличия неправильных ссылок на реестр. По этой причине для очистки недействительных записей рекомендуется выполнить сканирование реестра.

Классические проблемы Runtime Environment Error 4 Connection Broken

Наиболее распространенные ошибки Runtime Environment Error 4 Connection Broken, которые могут возникнуть на компьютере под управлением Windows, перечислены ниже:

  • «Ошибка программы Runtime Environment Error 4 Connection Broken. «
  • «Ошибка программного обеспечения Win32: Runtime Environment Error 4 Connection Broken»
  • «Извините за неудобства — Runtime Environment Error 4 Connection Broken имеет проблему. «
  • «Файл Runtime Environment Error 4 Connection Broken не найден.»
  • «Runtime Environment Error 4 Connection Broken не может быть найден. «
  • «Ошибка запуска программы: Runtime Environment Error 4 Connection Broken.»
  • «Не удается запустить Runtime Environment Error 4 Connection Broken. «
  • «Отказ Runtime Environment Error 4 Connection Broken.»
  • «Неверный путь к программе: Runtime Environment Error 4 Connection Broken. «

Проблемы Java Runtime Environment Runtime Environment Error 4 Connection Broken возникают при установке, во время работы программного обеспечения, связанного с Runtime Environment Error 4 Connection Broken, во время завершения работы или запуска или менее вероятно во время обновления операционной системы. Важно отметить, когда возникают проблемы Runtime Environment Error 4 Connection Broken, так как это помогает устранять проблемы Java Runtime Environment (и сообщать в Oracle Corporation).

Корень проблем Runtime Environment Error 4 Connection Broken

Большинство проблем Runtime Environment Error 4 Connection Broken связаны с отсутствующим или поврежденным Runtime Environment Error 4 Connection Broken, вирусной инфекцией или недействительными записями реестра Windows, связанными с Java Runtime Environment.

Точнее, ошибки Runtime Environment Error 4 Connection Broken, созданные из:

  • Недопустимая (поврежденная) запись реестра Runtime Environment Error 4 Connection Broken.
  • Вирус или вредоносное ПО, повреждающее Runtime Environment Error 4 Connection Broken.
  • Другая программа (не связанная с Java Runtime Environment) удалила Runtime Environment Error 4 Connection Broken злонамеренно или по ошибке.
  • Другое приложение, конфликтующее с Runtime Environment Error 4 Connection Broken или другими общими ссылками.
  • Неполный или поврежденный Java Runtime Environment (Runtime Environment Error 4 Connection Broken) из загрузки или установки.

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In this post, we will solve the «Java Runtime Environment not found error». This java error is one of the common errors faced by developers or end-users. Whenever you try to install any software which requires java like eclipse or Minecraft. Also, if you are new to java development, JDK or Java Development Kit is necessary for you.

Following this tutorial will help you to resolve all Java runtime errors. Additionally, you will learn to install, remove and set java variables in Windows10 and Ubuntu.

These are the very common errors you will find related to Java.

  • java runtime environment not found
  • java runtime environment not found windows 10
  • eclipse java runtime environment not found
  • eclipse java runtime environment not found path
  • java SE runtime environment not found
  • java runtime environment not found at bin javaw.exe
  • unable to load java runtime environment
  • cannot determine a valid java home
  • java runtime environment not found mac

Let’s understand some basic concepts of Java runtime first. Check out this post, if you are getting a java command not found error.

Table of Contents

  • 1 What is a runtime environment?
  • 2 JRE vs JDK
  • 3 Java download
  • 4 How to install Java runtime environment step by step
  • 5 Video tutorial-JRE error solved for Windows
  • 6 How to uninstall java from Windows 10
  • 7 How to install java runtime environment in Ubuntu 20.04
  • 8 Video Tutorial — JRE error solved for Ubuntu
  • 9 Frequently Asked Questions (FAQs)
  • 10 Ending notes

What is a runtime environment?

Runtime basically means everything you require to run a program. Which includes environment variables, directory structure, common libraries etc. This can also be a virtual machine like

  • JRE (Java Runtime Environment)
  • CLR (Common Language Runtime) for .net framework

The target would be JRE or CLR for your program, need to decide by you. As soon as you execute any program, it’s in run time.

JRE vs JDK

JRE JDK
Stands for Java Runtime Environment Stands for Java development kit
To run Java programs, you need JRE Helps to build Java programs and applets
Platform dependent contains libraries and supporting tool Platform dependent contains tools development and debugging
JRE does not contain a development kit. JDK includes JRE also to execute the program
Simple JRE VS JDK

What are the causes of the «Java Runtime environment not found» error

  1. Java is not installed in your system
  2. Java installation not completed (due to errors)
  3. Environment variables of Java are not set
  4. Java conflict due to more than one Java Runtime installation

Because JRE is platform-dependent, I have covered java installation, variable setup and un-installation for Windows and Ubuntu both.

Choose Windows 10 or Ubuntu 20.04 from the post and follow step by step to get java issues resolved.

Java download

Before installation, first, we need to download java

Step1

Visit oracle.com and download JDK 15 or the latest available for your system. I am downloading it for Windows 10 (64-bit). The latest available versions of java are listed in the screenshot.

java-download-windows10

How to install Java runtime environment step by step

Let’s solve 1st reason for «Java runtime environment not found», Because java is not installed.

Step2

First, check for any pre-installed java version —

Open the command prompt with «Run as administrator» and run java command.

C:Usersadmin> java --version

java-version-check

How to install java runtime environment in Windows 10

Step3

Once Download completes. Browse to the «jdk-15.0.1_windows-x64_bin.exe» file and double-click on it, to run the installer. Click Next.

how-to-install-java-windows10

Step4

I recommend keeping «C:Program filesjavajdk-15.0.1 (64-bit)» as the default installation folder. Select Next.

You may select different installation folders also. For example, if you are installing a second instance of java software. Click on change and browse for the target folder.

Java-runtime-default-installation-folder

Step5

Let installation complete, it may take a few minutes.

java-runtime-environment-installer

Step6

Click close. Now you are done with java installation on windows 10.

java-runtime-environment-not-found-solved

How to set the environment variable for java in windows10

Set the Environment variable for java in windows 10 by these steps —

Step7

Type «environment» in the search window. Click «open» on «Edit the system environment variables«

environment-variable-windows10

Step8

Click on Environment variables.

java-runtime-environment-variable

Step9

Select «Path» > Then click Edit.

How-to-set-environment-variable-for-java

Step10

Select New > Give path of java installation directory > For example, «C:Program filesjavajdk-15.0.1bin» in my case. If you have selected a different folder for java installation in step4. You can enter your path to the bin folder.

Click OK.

How-to-set-Java-runtime-environment-variable

Step11

Set «classpath» for java. Click «New» in the environment variable window. It allows to set up the new environment variables.

How-to-set-classpath-variable-for-java

Step12

In «Variable name», enter «classpath«. Also in «variable value» provide path to your java installation till «lib» folder. In my case it is «C:program filesjavajdk-15.0lib > Select OK

How-to-set-classpath-java-runtime-variable

Close all open environment variables windows by selecting OK.

How to check what version of java I have?

Installation and java variables have been set up. Now, Let’s validate the java installation and version.

Step13

Open the command prompt with «run as administrator» rights in windows 10.

windows10-command-prompt

Step14

Run the «java» command to check your Java and JRE (Java Runtime Environment) version.

java --version

check-which-java-version-i-have

Check java SDK version with javac command

javac version

Video tutorial-JRE error solved for Windows

«Java Runtime Environment not found» error fixed for windows 10

How to uninstall java from Windows 10

In case, you are not happy with your old java or JRE version and want to install a new. For that, you need to remove the old Java version.

Cleanup of Java from Windows 10 is pretty easy. Follow these steps to remove java from your system.

Step15

Search add or remove programs and click open

remove-java-windows10

Step16

Select the java program and click Uninstall.

uninstall-java-runtime-environment-windows10

Java software will go from the window. You can clean up java variables also, set up in step10 and 11 earlier.

There are two ways to download and install java or JDK in Ubuntu 20.04

A.) Using the apt command

B.) Download the Oracle JDK package and install it manually

Let’s see both options one by one-

A.) How to install java or JRE in Ubuntu 20.04 using the apt command

To install Java in Ubuntu using the repository, Follow these commands

Step17

Update package index using apt command

$ sudo apt update

sudo-apt-update

Step18

Check if you have any old java versions installed in the system. In my case, java is not installed.

$ sudo java -version

output

Command ‘java’ not found, but can be installed with:

sudo apt install openjdk-11-jre-headless              # version 11.0.9.1+1-0ubuntu1~20.04, or
sudo apt install default-jre                                      # version 2:1.11-72
———————-output-truncated————————————

Step19

Run the «apt» command to install java or JRE. I will install default-jre version 2:1.11-72 in my Ubuntu system from the list.

$ sudo apt install default-jre

install-java-runtime-using-apt-ubuntu

Select «and press Enter. Let installation complete. it will take a few minutes.

Step20

Check the java version

$ sudo java -version

output

check-java-runtime-enironment-ubuntu-20.04

How to Remove java from Ubuntu 20.04

Step21

Run apt command to remove JRE package installed. Press Y and then enter.

$ sudo apt autoremove "JRE package name"

clean-java-from-ubuntu

B.) How to install the latest java or JDK in Ubuntu 20.04 from oracle (manually)

Step22

Java JRE download steps —

Visit oracle.com and download JDK 15 or the latest available .deb and transfer to your system. I am downloading Debian package jdk-15.0.1_linux-x64_bin.deb.

java-jre-download

Alternatively, you can download java using wget command.

$ sudo wget "download link"

Reference output

java-runtime-environment-download

Step23

Rename the .deb file using mv command, if required. Then install the Debian package using the dpkg command.

Learn more ways to install .deb package.

$ sudo dpkg -i ".deb-file-path"

output

how-to-install-java-runtime-environment-ubuntu

Default installation directory path of java would be «/usr/lib/jvm/jdk-15.0.1/«. So, make a note of it, as it will be required to set up a Java_HOME variable.

How to set the «JAVA_HOME» variable in Ubuntu 20.04

Set the JAVA_HOME variable for all users in Ubuntu by editing the environment file.

Step24

Edit /system/environment file

$ sudo vi /etc/environment

Add path «/usr/lib/jvm/jdk-15.0.1/bin» to the last of the environment file. Then, save and exit.

how-to-set-java-home-in-ubuntu

Run source command to execute changes made in the environment file.

$ sudo source /etc/environment

Step25

Check your java version

$ sudo java -version

check-java-version-ubuntu

Remove java runtime environment package using dpkg command

Step26

Run the dpkg command with the —purge option to completely clean java from Ubuntu 20.04

$ sudo dpkg --purge "package-name"

For example,

$ sudo dpkg --purge jdk-15.0.1

remove-java-runtime-environment-completely-dpkg-command

Video TutorialJRE error solved for Ubuntu

Video on «How to fix java runtime environment error in Ubuntu 20.04»

Frequently Asked Questions (FAQs)

Where is the java runtime environment on Windows 10?

The default installation folder for java runtime is «C:Program filesjavajdk-15.0.1bin» in the case of windows 10.

What does Java Runtime Environment do?

Java Runtime Environment (JRE) helps to run java programs like the eclipse.

What is the java runtime environment used for?

Java runtime environment helps to run java programs like Tomcat, eclipse and Jenkins.

What is the java runtime environment?

Java runtime environment JRE is a software that runs on the operating system. Which provides class libraries and resources to run java programs.

How to set the java runtime environment in windows 10?

Type «environment» in the search window. Click «open» on «Edit the system environment variables«
Click on Environment variables.
Select «Path» > Then click Edit.
Select New > Give path of java installation directory > For example, «C:Program filesjavajdk-15.0.1bin«
Click OK

Ending notes

I hope after reading this article, you will be able to solve the «Java Runtime Environment not found error». Because majorly reasons for java related errors are, either Java is not installed or the java variable is not set.

if you still have issues, please comment and let me know, I will try to help you.

When I download the Trader Workstation (TWS Latest) of InteractiveBrokers for Windows 64 bit in this page and execute it, it pops up the following error:

Error downloading the Java(TM) Runtime Environment. Please check your internet connection and start the installation again.
Log: C:UsersusernameAppDataLocalTempi4j_nlog_19.log

I tried installing Java Runtime Environment from the official site, but it doesn’t work. Also tried installing any of the other available versions of the Trader Workstation. There is not any solution on the internet, so if someone has an idea of why this happens and a possible solution it would be awesome. Thanks in advance.

Amazon If you use Interactive Broker’s Trader Workstation and you see an error dialog saying Error: could not find Java SE Runtime Environment when you run the TWS Windows shortcut you are in the right place. This article will walk you through fixing this error.

The error dialog looks like the following:

Windows error dialog: could not find Java SE Runtime Environment

Even though this article is related to IB’s TWS Java program it may help you fix the same error that occurs when you run a different Java software application.

Cause of the problem

First of all TWS is a software application written in the Java programming language. It needs the Java runtime environment in order to run.

Right click on the TWS Windows shortcut to examine the actual shortcut. It should be something like this:

C:WindowsSystem32javaw.exe -cp jts.jar;total.2012.jar -Dsun.java2d.noddraw=true -Dswing.boldMetal=false -Dsun.locale.formatasdefault=true -Xmx1024M -XX:MaxPermSize=256M jclient/LoginFrame C:Jts

When you finish installing TWS on your Windows platform, a Windows shortcut is created automatically which points to C:WindowsSystem32javaw.exe. javaw.exe is the Java runtime environment executable. However if C:WindowsSystem32javaw.exe is incompatible with your computer hardware or with TWS program, you will see this error dialog.

Therefore, the root cause of the problem where system cannot find Java runtime environment is that the installed Java runtime environment is incompatible with your system hardware or with the Java program.

Solution

To fix the error that Windows cannot find Java SE runtime environment, simply download and install the latest JRE from the internet. Once you finish installing JRE on your Windows system, you should see the JRE files in C:Program Files (x86)Java.

In my situation I have both jre6 and jre7 folder. Let’s go to jre7 -> bin and I see javaw.exe. The complete path to javaw.exe is:

C:Program Files (x86)Javajre7binjavaw.exe

I copy it to C:WindowsSystem32 to replace the old javaw.exe and run the TWS shortcut again. And it works!

If you don’t know which version of JRE to download, download several of them, and try each one.

Questions? Let me know!

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  • Feedback
  1. tried to start TWS this morning,

    got an error message — Could not find Java SE Runtime Environment

    I uninstall and reinstalled Java, to no avail.

    Any clues?

  2. make sure you have the 32 bit java installed

  3. are you running a 32 or 64 Java version and
    did you switch versions recently ?

  4. Had similar issue with the DDE excel to follow is the email from IB
    Edit [months ago not today, as I notice a TWS issue in another thread — not related]

    Thank you for contacting Interactive Brokers.

    As per conversation, the Excel DDE issue that you are describing occurs on computers running on a 64 bit Windows OS.

    Please refer to the instructions below regarding the error message of Excel DDE on TWS:
    1) Uninstall TWS, Java and the API Components then restart computer. (Please go to your Control Panel > Programs and Features to remove: Trader Workstation 4.0, TWS Interoperability Components and all Java components)
    2) Download and install Java 32 bit from the link: http://www.oracle.com/technetwork/java/javase/downloads/jre-6u32-downloads-1594646.html (Please Accept the license agreement and download the file «Windows x86 Offline»)
    3. Download and install TWS through the link: http://download.interactivebrokers.com/download/tws40_install.exe
    4) Confirm where the javaw.exe file is installed. (It should be something like C:WindowsSysWOW64javaw.exe)
    5) Right-click the TWS desktop shortcut, select Properties and go to the Shortcut tab and refer to Target, and point the path or javaw.exe to where it is installed:
    -It should read: C:WindowsSystem32javaw.exe -cp jts.jar;pluginsupport.jar;hsqldb.jar;jcommon-1.0.12.jar;jfreechart-1.0.9.jar;jhall.jar;other.jar;riskfeed……
    -Change it to: C:WindowsSysWOW64javaw.exe -cp jts.jar;pluginsupport.jar;hsqldb.jar;jcommon-1.0.12.jar;jfreechart-1.0.9.jar;jhall.jar;other.jar;riskfeed……
    6) Install the API Components through the link: http://www.interactivebrokers.com/download/InstallAX_966.exe
    7) Log back into TWS and you should not get the error «Ddedll.dll file is missing our out of date…»

    Should you require further assistance please feel free to contact us.

    Kind regards,
    Frankie
    IB Technical Assistance Center

  5. Thanks all for the replies.

    Followed the above instruction and got it working.

    But gosh the new TWS is ugly.

  6. Sometimes something as simple as rebooting the computer will sort the issue. Ensure you have a copy of javaw.exe file sitting in the WindowsSystem32 directory.

  7. I’ve found that JAVA with its regular updates being required, along with TWS, it’s a problematic combination.
    Frequently after a JAVA update I then experience problems getting TWS to run.
    Today I had yet another JAVA update (lost count how many times this has been done over the years) and TWS spat the dummy yet again and wouldn’t run.
    I tried all the uninstalling tricks etc to no avail, TWS still wouldn’t run.

    My solution to the problem is (a) I unticked JAVA updates — so no more of them unless I deem it necessary and then I’ll do it manually, I’m fed up with the continual JAVA circus of updates, (b) uninstalled TWS and now I’m running the web based TWS version.
    Go to: https://www.interactivebrokers.com / LOGIN / Trader workstation Latest

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