SAML2

[gguaita]

Have you written code for single signon, from a desktop application c# Framework .NET 4.8, with SAML2?

[AndersAbel]

Saml2 generally does not work well with native/desktop applications. I would use IdentityServer as a protocol bridge. Set up your application to authenticate using OIDC to IdentityServer. Then use a Saml2 authentication handler to connect IdentityServer to the Saml2 Idp. The Sustainsys.Saml2.AspNetCore2 package is free to use and compatible with IdentityServer.