The UseRegistration property on the ApplicationEndpointSettings object is one of those critical details that you always forget, much the same way you always forget your checkbook or library card at home the one time you actually need it. UseRegistration...
One of the most common issues you are likely to run into in doing UCMA 2.0 development is the following exception: Microsoft.Rtc.Internal.Sip.TLSException: CertificateInfoNative::AcquireCredentialsHandle() failed; HRESULT=-2146893043 Most often, it means...