c# - HTTP Error 502.5 - ANCM Out-Of-Process Startup Failure after upgrading to ASP.NET Core 2.2

Question

After upgrading my project to ASP.NET Core 2.2, I tried to run the application (locally of course) and the browser displayed an error message like in the below screenshot.

no more errors notified by visual studio error explorer. I don't know what's happen.

Answer 1

In my case, I upgraded some nuget packages to net core 2.2, but I did not have the net core 2.2 sdk installed, so I went to net core website to download the latest sdk or runtime package, and then I did a net stop was /y and then a net start w3svc in the CMD as administrator. Problem solved for me.