ms-diagnostics: 2147;reason="Directory search is disabled."

Question

I have a third party Application through which am trying to communicate with LYNC 2010 server.Using RTC client API 1.3 am trying to connect with lync 2010 server. I can able to login to my client application, but user search is not happening and showing following information in lync server log.

CSeq: 1 SERVICE
Call-ID: 79ffaa13176e463eae595b5302f1b5ea
Authentication-Info: Kerberos qop="auth", opaque="425375C9", srand="9C16A66C", snum="12", rspauth="040401ffffffffff000000000000000048050548e290674edab8bf9e", targetname="sip/TESTING529.TEST.TST", realm="SIP Communications Service", version=4
Content-Length: 62
Via: SIP/2.0/TLS 172.16.133.27:64969;ms-received-port=64969;ms-received-cid=24200
ms-diagnostics: 2147;reason="Directory search is disabled.";source="TESTING529.TEST.TST"
Content-Type: application/msrtc-fault+xml
Server: RTC/4.0
Message-Body: <Fault>
<Faultcode>Server.Unavailable</Faultcode>
</Fault>
$$end_record


can anyone answer my questions,

1. Why the lync server shows in the log "directory search is disabled"

2.Does the RTC API 1.3 supports to communicate with Lync 2010?

3.If RTC API 1.3 not supports through which API i can  communicate to lync server?

Answer 1

It appears you are attempting to perform a directory search request via SIP, which is not supported in Lync Server.  This was available back in LCS and still included in OCS for backward compatibilty, but in Lync the only way to perform directory searches are through the Address Book web server (via either file download or Web query).

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Jeff Schertz | Microsoft Solutions Architect - Polycom | Lync MVP

Answer 2

Thanks Jeff schertz!