Category: Communicator Error Codes
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Lync Communicator errors
Very useful in determining causesSource http://msdn.microsoft.com/en-us/library/gg132446(v=office.12).aspx Mode Error ID Error Message Additional Information Diagnostic reason IM 0 This message was not delivered to [user name] because the service is not available. Server Internal Error. IM 1 [user name] could not be reached and this message was not delivered. Service Unavailable. Conference…
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