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Communicator 2005 contact list may incorrectly list a contact as Status unknown

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Microsoft Knowledge Base Article

This article contents is Microsoft Copyrighted material.
©2005-©2007 Microsoft Corporation. All rights reserved. Terms of Use | Trademarks

Communicator 2005 contact list may incorrectly list a contact as "Status unknown"

Article ID: 923636 - View products that this article applies to.

On This Page

SYMPTOMS

When you use Microsoft Office Communicator 2005 over a virtual private network (VPN) connection, your contact list may incorrectly list a contact as "Status unknown."

CAUSE

This problem occurs when the VPN connects to host server at a slow connection speed. When this occurs, Communicator 2005 cannot use Session Initiation Protocol (SIP) compression over the VPN connection.

RESOLUTION

This issue is fixed in the Communicator 2005 hotfix package that was released on October 19, 2006.

How to obtain the hotfix

For more information, click the following article number to view the article in the Microsoft Knowledge Base:
926404 Description of the Communicator 2005 hotfix package: October 19, 2006


To enable this hotfix package, follow these steps:
  1. Exit Communicator 2005.
  2. Click Start, click Run, type regedit, and then click OK.
  3. Locate and then click the following registry subkey:
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Communicator\SIPCompression
  4. After you select the subkey in step 3, point to New on the Edit menu, and then click DWORD Value.
  5. Type Mode, and then press ENTER.
  6. Right-click Mode, and then click Modify.
  7. In the Value data box, type 3, and then click OK.
  8. On the File menu, click Exit to close Registry Editor.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Properties

Article ID: 923636 - Last Review: October 11, 2011 - Revision: 3.0
APPLIES TO
  • Microsoft Office Communicator 2005
Keywords: 
kbexpertisebeginner kbqfe kbbug kbfix kbpubtypekc KB923636
       

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