<PackageReference Include="System.Security.Principal.Windows" Version="5.0.0-preview.6.20305.6" />

IdentityNotMappedException

public sealed class IdentityNotMappedException : Exception
namespace System.Security.Principal { public sealed class IdentityNotMappedException : Exception { public IdentityReferenceCollection UnmappedIdentities { get { throw new PlatformNotSupportedException(); } } public IdentityNotMappedException() { throw new PlatformNotSupportedException(); } public IdentityNotMappedException(string message) { throw new PlatformNotSupportedException(); } public IdentityNotMappedException(string message, Exception inner) { throw new PlatformNotSupportedException(); } } }