Summary

This article describes the Microsoft Lync Server 2010 issue that is fixed in the cumulative update for Lync Server 2010, Conferencing Server that is dated August, 2011.

This article describes the following items about the update package:

  • The issues that the update package fixes.

  • The prerequisites for installing the update package.

  • Whether you must restart the computer after you install the update package.

  • Whether the update package is replaced by any other update package.

  • Whether you must make any registry changes.

  • The files that the update package contains.

INTRODUCTION

Issues that this cumulative update fixes

This cumulative update fixes the following issue:

  • 2600747 A user cannot be heard in a conference that contains more than twenty other PSTN participants in a Lync Server 2010 environment



Resolution

Hotfix information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may 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.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft website:

http://support.microsoft.com/contactus/?ws=supportNote In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

There are no prerequisites for installing this update.

Prerequisites

There are no prerequisites for installing this update.

Hotfix replacement information

This cumulative update replaces the released cumulative update that is described in KB article 2514975.

For more information, click the following article number to view the article in the Microsoft Knowledge Base:

2514975 Description of the cumulative update for Lync Server 2010, Conferencing Server: April 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 apply this cumulative update, install the KB2514975-amd64-OCSMCU.msp package on the following computers:

  • Lync Server 2010 – Standard Edition Server

  • Lync Server 2010 – Enterprise Edition - Front-end

  • Lync Server 2010 – Enterprise Edition – Standalone Audio Video Conferencing Server

Removal information

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

Note After you uninstall this cumulative update, the following services may be disabled:

  • The Lync Server Application Sharing service

  • The Lync Server Audio/Video Conferencing service

To resolve this issue, do the following steps for both services:

  1. Click Start, click Run, type services.msc, and then click OK.

  2. Double-click the name of the service that you want to modify.

  3. In the Startup type box, select Automatic, and then click Apply.

  4. Click Start, and then click OK.


Sometimes, when you try to uninstall the cumulative update, you are prompted for the source CD. If you are prompted for the source CD, insert it. Or, provide the path where the source files can be found.

File information

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

After the update is installed, the global version of this update has the file attributes, or a later version of the file attributes, that are listed in the following table:

File name

File version

File size

Date

Time

Platform

File_acpmcusvc.exe

4.0.7577.139

310,032

7-Apr-11

18:45

x86

File_appshapi.dll

4.0.7577.157

1,526,536

23-May-11

8:20

x64

File_appshcom.dll

4.0.7577.157

347,912

23-May-11

8:24

x64

File_asmcuimp.dll

4.0.7577.139

768,776

7-Apr-11

18:46

x86

File_avmcuimp.dll

4.0.7577.139

985,864

7-Apr-11

18:45

x86

File_gac_microsoft.rtc.server.mcuinfrastructure.dll

4.0.7577.166

2,288,456

21-Jul-11

4:50

x86

File_immcusvc.exe

4.0.7577.139

776,968

7-Apr-11

18:46

x86

File_interop.appshcom.dll

4.0.7577.139

88,856

7-Apr-11

18:46

x86

File_microsoft.rtc.internal.collaboration.appsharing.dll

4.0.7577.139

1,579,864

7-Apr-11

18:45

x86

File_microsoft.rtc.server.mcuinfrastructure.dll

4.0.7577.166

2,288,456

21-Jul-11

4:50

x86

File_mpproxy.dll

4.0.7577.139

367,368

7-Apr-11

18:45

x86

File_mpserviceimp.dll

4.0.7577.168

469,760

23-Aug-11

22:16

x86


References

For more information about software update terminology, 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 updatesFor more information about the latest updates for Lync Server 2010, click the following article number to view the article in the Microsoft Knowledge Base:

2493736 Updates for Lync Server 2010

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