ASP.NET Core - Assets file doesn't have a target for .NETCoreApp 3.1

Question

I'm trying to compile my application to run on Core 3.0 (NOT 3.1)

And I'm able to compile and run fine locally, but when I do a publish it gives me:

Error NETSDK1005: Assets file 'C:\dev...\project.assets.json' doesn't have a target for '.NETCoreApp,Version=v3.1'. Ensure that restore has run and that you have included 'netcoreapp3.1' in the TargetFrameworks for your project.

But I'm not trying to make it run on 3.1, I need 3.0 (To maintain compatibility with other projects)

Is it possible to find out what causes it to look for 3.1 instead of 3.0?

Answer 1

1. Update all DLLs to version 3.0

2. Check your build configuration

3. Edit FolderProfile.pubxml and change <TargetFramework>netcoreapp3.1</TargetFramework> to <TargetFramework>netcoreapp3.0</TargetFramework>

Answer 2

I had the same issue after upgrading from 3.1 to Net 6.0 where it will Build but not Publish. I then updated my existing Publish profiles to Net 6.0 as well and everything is working now.

Publish Profile Setting to change as well