ANCM Failed to Find Native Dependencies in Azure AppService

In Programming Tags #azure #ancm #appservice #aspnet-core Published 2/10/2022

HTTP Error 500.31 - ANCM Failed to Find Native Dependencies

I recently updated my blog to move from a custom code base to the wonderful PiranhaCMS. Upon publishing the site to my Azure AppService I received the following error:

HTTP Error 500.31 - ANCM Failed to Find Native Dependencies

Common solutions to this issue:
The specified version of Microsoft.NetCore.App or Microsoft.AspNetCore.App was not found.
Troubleshooting steps:
Check the system event log for error messages
Enable logging the application process' stdout messages
Attach a debugger to the application process and inspect
For more information visit: https://go.microsoft.com/fwlink/?LinkID=2028526

This error occurs when the site can't find the correct .NET Core runtime to use. I checked in the Azure Portal and I was setup to use .NET 6 which matched the target of my project. Upon further inspection I realized that when I published (into an existing AppService) it had left many of the old files out there and and something those files were the culprit causing the issue.

I was able to resolve the error by having my publish profile delete all existing files before publishing.

Leave a comment

Please note that we won't show your email to others, or use it for sending unwanted emails. We will only use it to render your Gravatar image and to validate you as a real person.