Can't connect to Office Communication Server through Unified Communications API

Posted by Robin Clowers on Stack Overflow See other posts from Stack Overflow or by Robin Clowers
Published on 2009-12-21T18:29:18Z Indexed on 2010/05/02 4:27 UTC
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Filed under:

ocs

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ucma

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ucma2.0

I am trying to connect to Office Communication Server using the Unified Communications Managed API. I have tried my user and a fresh user enabled for OCS. Both account can successfully log into the Office Communicator client, but fail using the API. When creating the network credential, if I pass in the username in the form domain\username, I get this error:

SupportedAuthenticationProtocols=Ntlm, Kerberos
Realm=SIP Communications Service
FailureReason=InvalidCredentials
ErrorCode=-2146893044
Microsoft.Rtc.Signaling.AuthenticationException: The log on was denied. Check that the proper credentials are being used and the account is active. ---> Microsoft.Rtc.Internal.Sip.AuthException: NegotiateSecurityAssociation failed, error: - 2146893044

If I leave off the domain in the username I this error:

ResponseCode=404 ResponseText=Not Found
DiagnosticInformation=ErrorCode=4005,Source=OCS.mydomain.com,Reason=Destination URI either not enabled for SIP or does not exist

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