Article ID: 890303
Article Last Modified on 5/21/2007
APPLIES TO
- Microsoft Windows Messenger 5.0
- Microsoft Office Live Communications Server 2005 Enterprise Edition
SYMPTOMS
After you enable a user for live communications to a Microsoft Office Live Communications Server 2005 pool, that user cannot sign in to the session initiation protocol (SIP) communications service. If the user tries to sign in, the user receives the following error message:
However, if either of the following conditions is true, the user can sign in successfully:
- You configure the user account to connect to a Live Communications Server 2005 Standard Edition server.
- You configure the user account to connect to a Microsoft Office Live Communications Server 2003 Home Server.
CAUSE
This issue occurs if the following conditions are true:
- The user tries to connect to the SIP communications service from a computer that is running Microsoft Windows Messenger 5.0.
- Windows Messenger 5.0 is configured to connect to the Live Communications Server 2005 pool by using TCP.
WORKAROUND
To work around this issue, use one of the following methods.
Method 1: Upgrade to Windows Messenger 5.1
Upgrade the Windows Messenger client program to Windows Messenger 5.1. This issue does not occur with Windows Messenger 5.1. To obtain the latest version of Windows Messenger, visit the following Microsoft Web site:
Method 2: Use Transport Layer Security (TLS)
Configure Live Communications Server 2005 to accept connections by using TLS. For additional information about how to configure TLS in Live Communications Server 2005, see the Live Communications Server 2005 Enterprise Edition Deployment Guide. To obtain this guide, visit the following Microsoft Web site:
MORE INFORMATION
The Live Communications Server 2005 Enterprise Edition Deployment Guide is available as part of the Live Communications Server 2005 Deployment Resources. To obtain these deployment resources, visit the following Microsoft Web site:
Additional query words: lcs 2005 im chat connect
Keywords: kberrmsg kbprb kbtshoot KB890303