Error message when you try to log on to Live Communications Server 2005 with Service Pack 1 by using Communicator Web Access: "The server is unavailable" (915114)


The information in this article applies to:

  • Microsoft Office Communicator Web Access
  • Microsoft Office Live Communications Server 2005 Service Pack 1

SYMPTOMS

When you use Microsoft Office Communicator Web Access to try to log on to Microsoft Office Live Communications Server 2005 with Service Pack 1, the logon fails. Additionally, you may receive the following error message: 
 The server is unavailable. Please sign in again or contact your system administrator.
Additionally, the following event is logged in the Application log on the Live Communications Server 2005 server:
Event Type: Error
Event Source: Communicator Web Access Session Service
Event Category: (2101)
Event ID: 50103 
Description:
The Communicator Web Access session service can not establish or maintain MTLS connection to the Live Communications Server.
Virtual server name: servername.com
Live Communications Server: N/A
Error code: 0xc835c3f3  
Cause: 
This problem is usually caused by an invalid MTLS certificate configured on the Communicator Web Access Server or Live Communications Server.
Resolution:
Review certificate related sections in Microsoft Office Communicator Web Access Planning and Deployment Guide. Ensure the MTLS certificates configured on the Communicator Web Access Server and Live Communications Server are valid. If the problem persists, run Communicator Web Access activation again to repair the server.
For more information, see Help and Support Center at http://support.microsoft.com.

RESOLUTION

To resolve this problem, take the following actions:
  • Make sure that the Mutual Transport Layer Security (MTLS) certificate has a subject name which is a fully qualified domain name (FQDN) of the Live Communications Server 2005 server.
  • Make sure that the Live Communications Server 2005 server has defined MTLS.
  • Make sure that the MTLS certificate is available for the MTLS requirements of the Live Communications Server 2005 server.
  • Restart the Live Communications Server services to populate the trusted server list. The trusted server list is built into the Live Communications Server 2005 server's memory when the server is restarted.

MORE INFORMATION

For more information about the Microsoft Office Communicator Web Access Planning and Deployment Guide, visit the following Microsoft Web site:

http://www.microsoft.com/downloads/details.aspx?familyid=B70782D2-C9AB-423E-A126-9E2882863969&displaylang=en

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Modification Type:MajorLast Reviewed:9/20/2006
Keywords:kbtshoot kbprb KB915114 kbAudITPRO
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