Error4 reports
Fix InternalServerError
in Azure Functions
✅ Solution
"InternalServerError" in Azure Functions often indicates a problem within the Azure infrastructure or the function app's configuration, preventing successful execution. To fix it: Review your function app's configuration, ensuring key vault references, managed identities, and dependencies are correctly configured and accessible. If the issue persists, check the Azure status page for any service outages and consider restarting the function app or redeploying to force a refresh of the environment.
Related Issues
Real GitHub issues where developers encountered this error:
[Flex consumption] Runtime error when trying to create a function placeholderSep 26, 2025
Key vault configuration references no longer updating on function app restartJul 16, 2025
Cannot use user assigned managed identity on Linux Flex ConsumptionMar 4, 2025
Function Apps loses access to the keyvault after it is stopped for a whileMar 4, 2025
Timeline
First reported:Mar 4, 2025
Last reported:Sep 26, 2025
Need More Help?
View the full changelog and migration guides for Azure Functions
View Azure Functions Changelog