Authority Override

In many scenarios, such as https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/wiki/Multi-tenant-client_credential-use, it is useful to specify the AAD tenant at the request level instead of the app level. However, the app and the request must always the same cloud, i.e. the host of the authority URL must not be different.

var app =  ConfidentialClientApplicationBuilder
                .Create(PublicCloudConfidentialClientID)
                .WithAuthority("https://login.microsoft.com/common", true)
                .Build();

var result = await app.AcquireTokenForClient(scopes)
                      .WithAuthority("https://login.microsoft.com/123456-1234-2345-1234561234");

An application instance can only deal with one cloud. If your app needs to handle multiple clouds at the same time, please create an app for each of them.