Microsoft KB Archive/911783

= After you enable an SIP account, the SIP account cannot log on to a Live Communications Server 2005 server =

Article ID: 911783

Article Last Modified on 12/22/2005

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APPLIES TO


 * Microsoft Office Live Communications Server 2005 Enterprise Edition
 * Microsoft Office Live Communications Server 2005 Standard Edition

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SYMPTOMS
After you enable a Session Initiation Protocol (SIP) account, the SIP account cannot log on to a Microsoft Office Live Communications Server 2005 server. Additionally, the SIP user may receive the following error message:

Signing in to SIP Communications Service failed because the password is incorrect or the sign-in name does not exist

This behavior occurs even if the SIP account is enabled on the Live Communications Server 2005 server.



RESOLUTION
To resolve this problem, follow these steps:
 * 1) Click Start, click Run, type dcomcnfg, and then click OK.
 * 2) Expand Component Services, expand Computers, expand My Computer, expand DCOM Config, and then expand RTC Store Access Interface Class.
 * 3) Right-click RTC Store Access Interface Class, and then click Properties.
 * 4) Click the Security tab.
 * 5) Under Access Permissions, click Edit.
 * 6) Add the following groups to the Group and user names list:
 * 7) * RTC Local Administrators
 * 8) * RTC Local User Administrators
 * 9) * RTC Server Local Group
 * 10) Restart the Live Communications Server service.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

Additional query words: LCS2005 sip

Keywords: kbtshoot kbprb KB911783

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