In the case of Windows, the authentication broker, also known as the Web Account Manager (WAM), can be updated through Windows Update, and there is zero need to update client applications when a new broker release drops. Now, not every authentication broker is on Windows - you can have brokers on macOS and Linux, and on iOS and Android devices, the Microsoft Authenticator app acts as the broker. acquire_token_silent ([ "User.Read" ], account = accounts [ 0 ]) else : print ( "No accounts in the cache" ) result = app .