"IB: Lost or unable to establish communications with IB TWS/GW

[jim1234]

Hello PlatformSupport,

I get this error message when I try to connect to IB. It has worked in the past.

"IB: Lost or unable to establish communications with IB TWS/GW.
Please verify TWS/GW is running on the target machine and
try reconnecting or contact support if the issue persists. (Panic)"

TWS data connection show all green (connected).

I am currently using these versions.
NinjaTrader 8.0.21.1 64-bit
Trader Workstation TWS 978.1o

I am unable to download data at End-Of-Day (EOD) or connect to live data during the day.
I trade off minute, hour or daily charts. No tick data.

Thank you.

[NinjaTrader_PatrickG]

jim1234 , I split your post into it's own thread as it was not directly related to the thread and symptom you had posted under originally.

I see you're using an unsupported version of TWS. To ensure that this unsupported version is not contributing to any symptoms, I recommend that you download and use the supported version of TWS (973.2). Here is a direct link:

• http://www.ninjatrader.com/ninjatrad...tion-973-2.exe

If you can't connect to Kinetick end-of-day either, this suggests some broader general networking issue my be the root cause. To resolve this, I recommend the following steps (test for the issue after each step):

• Restart NinjaTrader
• Restart your modem and (if applicable) router
• Restart your PC
• Clear your DNS
  • Open the Command Prompt
  • In the command prompt, run this command: ipconfig /flushdns
• If you are not already and the option is available to you, connect to the internet using an ethernet cable. Wireless connections are significantly more unreliable.
• Ensure exceptions have been added into any firewall/antivirus/backup programs for the Documents > "NinjaTrader 8" folder.
• Ensure that your computer is not turning off your Network Adapter to conserve power:
  • Right-click on your Start button
  • Select 'Device Manager'
  • Expand 'Network Adapters'
  • Right-click on your Network Adapter and select Properties > Power Management
  • Uncheck 'Allow the computer to turn off this device to save power' option
  • Click 'OK' to save the changes
  • Do this for all Network Adapters
• If the above steps do not help, contact your ISP and let them know you are experiencing a highly unstable connection. An issue of connectivity may exist on their end.

[jim1234]

Hi Patrick,

Thank you for getting me in the right thread.

I have installed the version of Trader WorkStation TWS 973.2h from your link.
I am currently using NinjaTrader 8.0.21.1 64-bit.

Kinetick EOD works flawlessly every time, so I can download EOD data and have Daily charts.

TWS data connection show all green (connected).
When I try to connect to TWS (to get minute data after market hours or have live minute charts during trading hours)
I still get this error message.

"IB: Lost or unable to establish communications with IB TWS/GW.
Please verify TWS/GW is running on the target machine and
try reconnecting or contact support if the issue persists. (Panic)"

The TWS-Ninjatrader8 connection has worked in the past.



Thank you for the quick response this morning,
Jim

[NinjaTrader_PatrickG]

Please send me your log and trace files so that I may look into what occurred.

• You can do this by going to the Control Center-> Help-> Email Support
• Ensuring 'Log and Trace Files' is checked will include these files. This is checked by default.
• Please reference the following ticket number in the body of the email: 2487958 ATTN PatrickG

[jim1234]

Good morning Patrick,

I managed to get it working. Here are the steps I took.

Uninstall all TWS versions (the first time I installed the correct TWS version, I found remnants of another version still on my computer),
Reboot computer,
Re-install TWS973-2 (still would not work at this point),
Re-construct IB connection including re-typing Username and Password, Port Numbers, etc. in the configuration dialogue.

Perhaps, if we had deleted and re-constructed the IB connection dialogue it would have worked without installing the correct version of TWS. However, in my case, I am glad I have the correct Ninjatrader version 973.2 installed.
I will try to make sure TWS does not try to update to a newer Ninjatrader-unsupported version of TWS.

Thank you sincerely for you assistance,
Jim