Configuring ConfidentialClientApplication via `.WithTenantIdFromAuthority` and a dStS authority fails with error

[christothes]

Building a confidential client using a dsts authority and calling ExecuteAsync fails with an error:

"A authority of type Dsts was used at the application and of type Aad at the request level. Please use the same authority type between the two."

An example configuration is below:

builder.WithTenantIdFromAuthority(
new Uri("https://usnorth-passive-dsts.dsts.core.windows.net/dstsv2/<some tenantId>"));

Prior to it being deprecated, this used to work via the following API:

builder.WithAuthority(AuthorityHost.AbsoluteUri, tenantId)

[bgavrilMS]

Hi @neha-bhargava - can you please have a look at this as this is blocking partners from upgrading to a safe version of Az SDK

[neha-bhargava]

Sure, taking a look.

[bgavrilMS]

Here's a repro

 [TestMethod]
 public async Task TestAsync()
 {
     string AuthorityHost = "https://usnorth-passive-dsts.dsts.core.windows.net/dstsv2/";
     string tenantId = "tenant";

     UriBuilder uriBuilder = new UriBuilder(AuthorityHost)
     {
         Path = tenantId
     };

     var app = ConfidentialClientApplicationBuilder
         .Create(TestConstants.ClientId)
         .WithAuthority(AuthorityHost, tenantId)
         .WithClientSecret("secret")
         .Build();

     AuthenticationResult res = await app
         .AcquireTokenForClient(TestConstants.s_scope)
         .WithTenantIdFromAuthority(uriBuilder.Uri)
         .ExecuteAsync()
         .ConfigureAwait(false);
 }