My trigger http://func-sos-westeurope-prod-01.azurewebsites.net/api/xxx is not working any more

Hi @Kaevikj Katerina .

Please try below to troubleshoot and potentially resolve the problem:

1. Check for Runtime Errors: Sometimes, the function runtime might not start due to exceptions. If you have Application Insights enabled, you can run the following query to check if there are startup exceptions logged:

      
      exceptions
      
      | where customDimensions.Category == "Host.Startup"
      
   

2. Review Function Invocation Logs: It’s possible that the function was triggered but failed during the execution. You can use the following query in Application Insights to investigate:

      
      exceptions
      
      | where customDimensions.prop__functionName =~ "*MyFunctionName*"
      
   

3. Check Competing Triggers: If there are multiple function apps trying to pull messages from the same queue, one may interfere with the other. Ensure that there aren't other functions configured to trigger on the same source.
4. Query Application Logs: If you've set up a Log Analytics workspace, try querying the logs to get detailed insights:

      
      AppServiceConsoleLogs_CL
      
      | where AppName_s =~ "*MyFunctionAppName*"
      
      | where Log_s contains "FunctionAppLogs"
      
   

5. Inspect Connection String or Queue Configuration: If the trigger relies on connections from a table, double-check if there have been any changes in connection strings or configuration that might affect your function.
6. Confirm Trigger is Configured Correctly: Ensure that the trigger is still correctly set up in your environment. Sometimes, changes in the cloud service or app configurations may require adjustments to how triggers are handled.

I hope this helps you get your trigger back on track! If you have any more questions, feel free to ask.

References:

• Investigating and reporting issues with timer triggered functions not firing
• Learn about using Application Insights to monitor Azure Functions
• Using Log Analytics with Azure Functions