Nigel Chatbot Error After Login into Nigel™ AI

Updated Aug 8, 2026

Reported In

Software

  • Nigel AI Integration

Issue Details

After logging in to Nigel I encounter an error with the chatbot functionality. The chatbot does not load or respond as expected after a successful login.  
The error message I receive is: 

Nigel chatbot error.
Please restart the application.

 

Solution

This behavior may occur if a security application blocks required Nigel services. 

Follow these steps to resolve the issue: 

  1. Check endpoint security software: 

    • Verify whether any endpoint protection software (for example, SentinelOne) is installed on the system. 

  1. Review blocked services: 

    • Open the endpoint security console. 

    • Check recent activity logs for any blocked Nigel-related services or processes. 

  1. Allow the blocked service: 

    • Identify the service associated with the Nigel chatbot. 

    • Add an exception or allow rule for the blocked service within the security software. 

  1. Restart the affected services: 

    • Restart the previously blocked service. 

    • Relaunch Nigel and log in again. 

  1. Validate functionality: 

    • Confirm that the chatbot loads correctly after login.

Additional Information

Endpoint security tools such as SentinelOne can restrict application services if they are classified as suspicious. Allowlisting the required service restores normal functionality.