Is it possible to revert to .NET Standard 2.0?

[danielgindi]

As .NET Standard 2.1 currently removes support for .NET Framework completely.

https://devblogs.microsoft.com/dotnet/announcing-net-standard-2-1/

States:

In fact, most libraries should be able to stay on .NET Standard 2.0, as the API additions are largely for advanced scenarios

[andrei-m-code]

Yes, done! Thanks to you ;)