Symptoms

Consider the following scenario:

  • You enable Remote Desktop, or you install the Terminal Services┬árole on a computer that is running Windows Server 2008.

  • You enable audio redirection on the computer.

  • You make a remote desktop connection to the computer from a remote client by using a high latency network such as a wide-area network (WAN).


In this scenario, the audio redirection feature randomly stops working in the remote desktop connection. If you try to play an audio file in Windows Media Player when this problem occurs, you receive the following error message:

Windows Media Player encountered a problem while playing the file.


Cause

This problem occurs because of a problem in the Remote Desktop Protocol (RDP) audio endpoint module (Rdpendp.dll).

Resolution

To resolve this problem, apply this hotfix on the affected Windows Server 2008-based computer.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that described in this article. Apply this hotfix only to systems that are experiencing the problem 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=supportNote 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

To apply this hotfix, you must have Windows Server 2008 Service Pack 2 (SP2) installed.

For more information about how to obtain a Windows Server 2008 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

968849 How to obtain the latest service pack for Windows Server 2008

Registry information

To use the hotfix in this package, you do not have to make any changes to the registry.

Restart information

You have to restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The English (United States) version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.

Windows Vista and Windows Server 2008 file information notes

Important Windows Vista hotfixes and Windows Server 2008 hotfixes are included in the same packages. However, only "Windows Vista" is listed on the Hotfix Request page. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows Vista" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.

  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.

    Version

    Product

    SR_Level

    Service branch

    6.0.600 0. 20xxx

    Windows Vista

    RTM

    LDR

    6.0.600 1 . 22xxx

    Windows Vista and Windows Server 2008

    SP1

    LDR

    6.0.600 2 . 22xxx

    Windows Vista and Windows Server 2008

    SP2

    LDR

  • Service Pack 1 is integrated into the release version of Windows Server 2008. Therefore, RTM milestone files apply only to Windows Vista. RTM milestone files have a 6.0.0000.xxxxx version number.

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately┬áin the "Additional file information for Windows Server 2008" section. MUM files and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

For all supported x86-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Rdpendp.dll

6.0.6001.22832

90,624

11-Jan-2011

16:41

x86

Rdpendp.mof

Not Applicable

1,122

04-Mar-2010

05:49

Not Applicable

Rdpendp.dll

6.0.6002.22568

90,624

11-Jan-2011

15:58

x86

Rdpendp.mof

Not Applicable

1,122

03-Apr-2009

20:49

Not Applicable


For all supported x64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

Rdpendp.dll

6.0.6001.22832

88,576

11-Jan-2011

15:04

x64

Rdpendp.mof

Not Applicable

1,122

26-Feb-2010

04:07

Not Applicable

Rdpendp.dll

6.0.6002.22568

88,576

11-Jan-2011

16:22

x64

Rdpendp.mof

Not Applicable

1,122

03-Apr-2009

20:43

Not Applicable


Workaround

To work around this problem, disconnect the remote desktop connection, and then reconnect it.

Status

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

More Information

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 updates

Additional file information


Additional file information for Windows Server 2008

Additional files for all supported x86-based versions of Windows Server 2008

File name

Package_1_for_kb2494136~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,971

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_2_for_kb2494136~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,792

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_3_for_kb2494136~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

2,296

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_4_for_kb2494136~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

2,117

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_for_kb2494136_client_1~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,373

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_for_kb2494136_client_2~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,536

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_for_kb2494136_client~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,720

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_for_kb2494136_server_0~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,414

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_for_kb2494136_server_1~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,536

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_for_kb2494136_server~31bf3856ad364e35~x86~~6.0.1.0.mum

File version

Not Applicable

File size

1,721

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

X86_30efdbb6052abc552dc0646e4a0da0b0_31bf3856ad364e35_6.0.6001.22832_none_2d0887547466c5aa.manifest

File version

Not Applicable

File size

719

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

X86_d46a7d1a32eae9f4bfeaf7e794340061_31bf3856ad364e35_6.0.6002.22568_none_ff8f37b2fada706b.manifest

File version

Not Applicable

File size

719

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

X86_microsoft-windows-t..ices-rdpsounddriver_31bf3856ad364e35_6.0.6001.22832_none_3b34882413391c58.manifest

File version

Not Applicable

File size

15,521

Date (UTC)

11-Jan-2011

Time (UTC)

16:55

Platform

Not Applicable

File name

X86_microsoft-windows-t..ices-rdpsounddriver_31bf3856ad364e35_6.0.6002.22568_none_3d008c0410725d59.manifest

File version

Not Applicable

File size

15,521

Date (UTC)

11-Jan-2011

Time (UTC)

16:12

Platform

Not Applicable


Additional files for all supported x64-based versions of Windows Server 2008

File name

Amd64_0a8635f0c1e68d60510be83c10aa3604_31bf3856ad364e35_6.0.6002.22568_none_719a0532fe250477.manifest

File version

Not Applicable

File size

723

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Amd64_2d00d9006c9528d63799024297838079_31bf3856ad364e35_6.0.6001.22832_none_32842083b0a467c4.manifest

File version

Not Applicable

File size

723

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Amd64_microsoft-windows-t..ices-rdpsounddriver_31bf3856ad364e35_6.0.6001.22832_none_975323a7cb968d8e.manifest

File version

Not Applicable

File size

15,558

Date (UTC)

11-Jan-2011

Time (UTC)

15:18

Platform

Not Applicable

File name

Amd64_microsoft-windows-t..ices-rdpsounddriver_31bf3856ad364e35_6.0.6002.22568_none_991f2787c8cfce8f.manifest

File version

Not Applicable

File size

15,558

Date (UTC)

11-Jan-2011

Time (UTC)

16:34

Platform

Not Applicable

File name

Package_1_for_kb2494136~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,983

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_2_for_kb2494136~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,802

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_3_for_kb2494136~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

2,312

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_4_for_kb2494136~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

2,131

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_for_kb2494136_client_1~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,381

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_for_kb2494136_client_2~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,546

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_for_kb2494136_client~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,730

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_for_kb2494136_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,422

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_for_kb2494136_server_1~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,546

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable

File name

Package_for_kb2494136_server~31bf3856ad364e35~amd64~~6.0.1.0.mum

File version

Not Applicable

File size

1,731

Date (UTC)

12-Jan-2011

Time (UTC)

07:42

Platform

Not Applicable


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