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Troubleshoot firewall or antivirus blocking
Check whether security software is preventing NinjaTrader or the connector from reaching required services.
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What this article helps you do
Restore connectivity without broadly disabling protection.
Before you start
- Administrator access to the Windows security product when required.
Follow these steps
- 1
Confirm NinjaTrader itself can sign in and reach its services.
- 2
Check the connector log for blocked network requests.
- 3
Review Windows Firewall or security-product events.
- 4
Allow only the documented executable and destination required by the connector.
- 5
Retest the connection.
- 6
Remove temporary broad exceptions after diagnosis.
What you should see
NinjaTrader and the connector communicate under a narrow security rule.
Common mistakes
- Turning off the firewall permanently.
- Allowing unknown executables.
- Assuming every connection problem is caused by antivirus.
Platform documentation
- NinjaTrader Installation GuideNinjaTrader
Platform instructions can change. Use the current official documentation for your platform version and account type.