Microsoft KB Archive/894607

= Remote users cannot communicate with other remote users in Live Communications Server 2005 =

Article ID: 894607

Article Last Modified on 7/24/2007

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APPLIES TO


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

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SYMPTOMS
Consider the following scenario. You have the following Microsoft Office Live Communications Server 2005 deployment:
 * Your Live Communications Server topology supports remote user access.
 * Remote users directly connect to a Live Communications Server 2005 Standard Edition pool or to a Live Communications Server 2005 Enterprise Edition pool through a Live Communications Server Access Proxy. Remote users' traffic does not pass through an intermediate director.
 * Remote users who are enabled for Live Communications are configured to communicate with other remote users or with internal users in the enterprise by using instant messaging.

In this scenario, you may experience the following symptom:
 * Live Communications Server logon information and presence information appear correctly for remote users. However, instant messages between a remote user and another remote user are not successfully transferred.



CAUSE
This problem occurs if the following conditions are true:
 * The Live Communications Server enterprise does not have a director server deployed. Instead, the Access Proxy server connects directly to the Live Communications Server Standard Edition front-end server or directly to the Live Communications Server Enterprise Edition front-end server.
 * Users are enabled only for remote user access. In this scenario, users are not enabled for federation.



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
No prerequisites are required to install this hotfix.

Restart requirement
You do not have to restart your computer after you install this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.   Date        Time Version     Size        File Name -  02-03-2005 19:55 2.0.5369.52 1,147,592   sipstack.dll



WORKAROUND
To work around this problem, enable the users for federation in Live Communications Server 2005.

Note Do not disable the users for remote user access. The users must be enabled for federation in addition to being enabled for remote user access.

To enable a user for federation, follow these steps:
 * 1) Start the Live Communications Server 2005 Microsoft Management Console (MMC) snap-in.
 * 2) Expand your forest, expand Domains, expand your domain, expand Live Communications servers and pools, expand your pool, and then click Users.
 * 3) In the right pane, right-click a user object, and then click Properties.
 * 4) Click to select the Enable federation check box.

Note Do not click to clear the Enable remote user access check box.
 * 1) Click OK.



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



MORE INFORMATION
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Additional query words: LCS 2005 chat RTC

Keywords: kbqfe kbhotfixserver kbbug kbfix KB894607

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