Description of the update package for Lync Server 2010, Web Components Server: April 2011

Microsoft Download Center

The following file is available for download from the Microsoft Download Center:
Download the WebComponents.msp package now.
Release Date: April 2011

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services

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By contacting support

A supported hotfix is available from Microsoft. However, this hotfix is intended to resolve only the problems that are described in this article. Apply this hotfix only to systems that are experiencing the problems described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website:

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

Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.

Prerequisites

There are no prerequisites for installing this hotfix.

Restart requirement

You may have to restart the computer after you apply this update.

Hotfix replacement information

This update replaces the following previously released update:

2449497 Description of the update package for Lync Server 2010, Web Components Server: January 2011

Registry information

To use one of the update packages in this package, you do not have to make any changes to the registry.

Update package installation information

To install this update package, install the KB2500441-x64-WebComponents.msp package on computers in your network that are running the following platforms:

• Lync Server 2010 - Standard Edition
• Lync Server 2010 - Enterprise Edition - Front-end

Removal information

To remove this update package, use the Add or Remove Programs item in Control Panel.

You may be prompted for restart after you uninstall the update for Lync Server 2010, Web Components Server.

Sometimes, when you try to uninstall the update package, you are prompted for the source CD. If this behavior occurs, insert the source CD, or provide the path where the source files can be found.

After you uninstall this update package, Internet Information Services (IIS) may stop running. This issue occurs because the ApplicationHost.config file is changed when you uninstall this update package.

Note The ApplicationHost.config file is located in the following directory:
The following changes are introduced to the ApplicationHost.config file:

1. Duplicate entries are created in the sections after <location path="Lync Server Internal Web Site" overrideMode="Allow"> and <location path="Lync Server External Web Site" overrideMode="Allow">.
   
   After you uninstall this update package, the two sections resemble the following:
   
   
   <location path="Lync Server Internal Web Site" overrideMode="Allow">
   <system.webServer>
   <security>
   <authentication>
   <windowsAuthentication/>
   <windowsAuthentication/>
   </authentication>
   <authentication/>
   </security>
   <security/>
   </system.webServer>
   <system.webServer/>
   </location>
   <location path="Lync Server External Web Site" overrideMode="Allow">
   <system.webServer>
   <security>
   <authentication>
   <windowsAuthentication/>
   <windowsAuthentication/>
   </authentication>
   <authentication/>
   </security>
   <security/>
   </system.webServer>
   <system.webServer/>
   </location>
2. The following two entries are created before the </configuration> tag at the end of the file:
   • <location path="Lync Server Internal Web Site" overrideMode="Allow"/>
   • <location path="Lync Server External Web Site" overrideMode="Allow"/>

To resolve this issue, follow these steps:

1. Remove the duplicate entries in the two sections mentioned earlier. After you do this, the two sections resemble the following:
   
   
   <location path="Lync Server Internal Web Site" overrideMode="Allow">
   <system.webServer>
   <security>
   <authentication>
   <windowsAuthentication/>
   </authentication>
   </security>
   </system.webServer>
   </location>
   <location path="Lync Server External Web Site" overrideMode="Allow">
   <system.webServer>
   <security>
   <authentication>
   <windowsAuthentication/>
   </authentication>
   </security>
   </system.webServer>
   </location>
2. Delete the following two entries at the end of the ApplicationHost.config file:
   • <location path="Lync Server Internal Web Site" overrideMode="Allow"/>
   • <location path="Lync Server External Web Site" overrideMode="Allow"/>
3. Save the ApplicationHost.config file.
4. Restart IIS.

File information

This update package may not contain all the files that you must have to fully update a product to the latest build. This update package contains only the files that you must have to resolve the issues that are listed in this article.

The global version of this hotfix package uses a Microsoft Windows Installer package to install the hotfix package. The dates and the times for these files are listed in Coordinated Universal Time (UTC) in the following table. When you view the file information, the date is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.