Auth0.AuthenticationApi not getting installed in a .Net web application.

Help
1

There is a requirement in my project where we have to integrate Auth0 with our legacy .Net application but when I try to install “Auth0.AuthenticationApi” through Package manager console the below error comes out:

“Could not install package ‘Auth0.AuthenticationApi 4.1.0’. You are trying to install this package into a project that targets ‘.NETFramework,Version=v4.0’, but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.”

I tried installing lower version also but without any success. Is there any workaround around this?

Thanks in advance.

I am using VS 2017 Pro.

2

Yes, the Auth0.AuthenticationApi NuGet package supports .NET Standard 1.1 which means you need to use at least .NET Framework 4.5

For more information see .NET Standard | Microsoft Learn

The reason for this is that the library uses async/await, which is only supported from .NET Framework 4.5 onwards.

3

Thanks jerrie for the quick response. I guess the only option left now is to upgrade to .NET 4.5.