I am using UCMA 4.0, and the program works if it runs at the machine of FE server.
But it occurs the following error when it runs at the non-domain-joined machine.
The exception is occurred by UserEndpoint.EndEstablish(IAsyncResult).
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Microsoft.Rtc.Signaling.TlsFailureException:A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider---> Microsoft.Rtc.Internal.Sip.TLSException:Failed to verify peer certificate. Result -2146762487
at Microsoft.Rtc.Internal.Sip.NegotiateLogic.ProcessPeerCertificate()
at Microsoft.Rtc.Internal.Sip.TlsTransport.DelegateNegotiation(TransportsDataBuffer receivedData)
at Microsoft.Rtc.Internal.Sip.TlsTransport.OnReceived(Object data)
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I've already download the certificate chain from domain controller by web enrollment, and I install the certificate to the trusted root certificate in the machine.
The Lync Client is then able to login, nevertheless, UCMA is still not working.
Does it need to do extra-procedure to make UCMA work?