I'm having issues deploying .NET Core applications to IIS on a Windows 10 machine.
When I deploy to IIS and navigate to the site I recieve the message:
"HTTP Error 500.31 - Failed to load ASP.NET Core runtime 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
In my event viewer, every call to the page generates 3 error messages.
Unable to locate application dependencies. Ensure that the versions of Microsoft.NetCore.App and Microsoft.AspNetCore.App targeted by the application are installed.
Could not find 'aspnetcorev2_inprocess.dll'. Exception message:
Failed to start application '/LM/W3SVC/4/ROOT', ErrorCode '0x8000ffff'.
On these alone, I'd go down the rabbit hole of thinking there's some issue in the build of the project or perhaps my installation of some .NET Core package except:
I think there must be some issue with how I've configured IIS, the sites, or the application pools, but as best I can tell there isn't any difference. If anyone has encountered this, I'm all ears for suggestions.
Using the tool suggested (and created) by @LexLi I was able to determine the issue was caused by the application pool not having permissions to the site folder. Giving it permissions fixed the issue. This was not clear from the error messages. Answered here in case anyone else experiences the same error message.
In my case, the target machine was missing the ASP.NET Core runtime itself.
Issue is resolved after installing the Hosting Bundle from https://dotnet.microsoft.com/download/dotnet-core/3.1
User contributions licensed under CC BY-SA 3.0