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A Windows Server 2008-based terminal server denies connection requests with the error message "The remote procedure call failed and did not execute" randomly under a heavy logon/logoff condition

Symptoms

You have a Windows Server 2008-based terminal server. If many users try to log on to or log off from the terminal server at the same time, some connection requests are denied, and then you receive the following error message:

The remote procedure call failed and did not execute.

For example, this issue may occur when 20 to 30 users try to log on or log off at the same time.

Note If a user tries to connect again, the second try may succeed.

Resolution

Hotfix information

A supported hotfix is 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 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 Web site:

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.

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

Prerequisites

To apply this hotfix, your computer must be running one of the following operating systems:

  • Windows Server 2008

  • Windows Server 2008 Service Pack 2

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information


This hotfix does not replace any other previously released 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 item in Control Panel.

Windows Server 2008 file information note


The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are
listed separately
. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files (attributes 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

SP requirement

Regapi.dll

6.0.6001.22431

67,584

12-May-2009

15:42

x86

SP1

Tsuserex.dll

6.0.6001.22431

77,312

12-May-2009

15:42

x86

SP1

Regapi.dll

6.0.6002.22134

67,584

12-May-2009

15:41

x86

SP2

For all supported x64-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

SP requirement

Regapi.dll

6.0.6001.22431

89,088

12-May-2009

16:06

x64

SP1

Tsuserex.dll

6.0.6001.22431

93,184

12-May-2009

16:06

x64

SP1

Regapi.dll

6.0.6002.22134

89,088

12-May-2009

15:40

x64

SP2

For all supported Itanium-based versions of Windows Server 2008

File name

File version

File size

Date

Time

Platform

SP requirement

Regapi.dll

6.0.6001.22431

175,104

12-May-2009

15:45

IA-64

SP1

Tsuserex.dll

6.0.6001.22431

210,432

12-May-2009

15:46

IA-64

SP1

Regapi.dll

6.0.6002.22134

175,104

12-May-2009

15:33

IA-64

SP2

Workaround

Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

322756 How to back up and restore the registry in WindowsTo work around this issue, modify the registry. To do this, follow these steps:

  1. Click Start, click Run, type regedit in the Open box, and then click OK.

  2. Locate the following registry subkey:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server

  3. Click Edit, point to New, and then click DWORD Value.

  4. In the New Value #1 box, type IgnoreRegUserConfigErrors, and then press ENTER.

  5. Right-click IgnoreRegUserConfigErrors, and then click Modify.

  6. In the Value data box, type 1, click Decimal, and then click OK.

  7. Exit Registry Editor.

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, 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 for Windows Server 2008

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

File name

File version

File size

Date

Time

Platform

Package_for_kb970689_sc_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,422

13-May-2009

03:39

Not Applicable

Package_for_kb970689_sc_1~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,690

13-May-2009

03:39

Not Applicable

Package_for_kb970689_sc~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,701

13-May-2009

03:39

Not Applicable

Package_for_kb970689_server_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,902

13-May-2009

03:39

Not Applicable

Package_for_kb970689_server_1~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,694

13-May-2009

03:39

Not Applicable

Package_for_kb970689_server~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,713

13-May-2009

03:39

Not Applicable

Package_for_kb970689_winpesrv_0~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,422

13-May-2009

03:39

Not Applicable

Package_for_kb970689_winpesrv~31bf3856ad364e35~x86~~6.0.1.0.mum

Not Applicable

1,430

13-May-2009

03:39

Not Applicable

X86_microsoft-windows-t..rvices-registryapis_31bf3856ad364e35_6.0.6001.22431_none_a4bc5ad53b30b1bc.manifest

Not Applicable

6,296

12-May-2009

19:26

Not Applicable

X86_microsoft-windows-t..rvices-registryapis_31bf3856ad364e35_6.0.6002.22134_none_a6a5cd9b385452e5.manifest

Not Applicable

6,296

12-May-2009

19:23

Not Applicable

X86_microsoft-windows-t..vices-userextension_31bf3856ad364e35_6.0.6001.22431_none_f334f46efc9b78f4.manifest

Not Applicable

28,795

12-May-2009

19:30

Not Applicable

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

File name

File version

File size

Date

Time

Platform

Amd64_microsoft-windows-t..rvices-registryapis_31bf3856ad364e35_6.0.6001.22431_none_00daf658f38e22f2.manifest

Not Applicable

6,320

12-May-2009

19:26

Not Applicable

Amd64_microsoft-windows-t..rvices-registryapis_31bf3856ad364e35_6.0.6002.22134_none_02c4691ef0b1c41b.manifest

Not Applicable

6,320

12-May-2009

19:21

Not Applicable

Amd64_microsoft-windows-t..vices-userextension_31bf3856ad364e35_6.0.6001.22431_none_4f538ff2b4f8ea2a.manifest

Not Applicable

28,835

12-May-2009

19:30

Not Applicable

Package_for_kb970689_sc_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,430

13-May-2009

03:39

Not Applicable

Package_for_kb970689_sc_1~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,702

13-May-2009

03:39

Not Applicable

Package_for_kb970689_sc~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,711

13-May-2009

03:39

Not Applicable

Package_for_kb970689_server_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,914

13-May-2009

03:39

Not Applicable

Package_for_kb970689_server_1~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,706

13-May-2009

03:39

Not Applicable

Package_for_kb970689_server~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,723

13-May-2009

03:39

Not Applicable

Package_for_kb970689_winpesrv_0~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,430

13-May-2009

03:39

Not Applicable

Package_for_kb970689_winpesrv~31bf3856ad364e35~amd64~~6.0.1.0.mum

Not Applicable

1,438

13-May-2009

03:39

Not Applicable

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

File name

File version

File size

Date

Time

Platform

Ia64_microsoft-windows-t..rvices-registryapis_31bf3856ad364e35_6.0.6001.22431_none_a4bdfecb3b2ebab8.manifest

Not Applicable

6,308

12-May-2009

19:10

Not Applicable

Ia64_microsoft-windows-t..rvices-registryapis_31bf3856ad364e35_6.0.6002.22134_none_a6a7719138525be1.manifest

Not Applicable

6,308

12-May-2009

19:03

Not Applicable

Ia64_microsoft-windows-t..vices-userextension_31bf3856ad364e35_6.0.6001.22431_none_f3369864fc9981f0.manifest

Not Applicable

28,815

12-May-2009

19:14

Not Applicable

Package_for_kb970689_sc_0~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,425

13-May-2009

03:39

Not Applicable

Package_for_kb970689_sc_1~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,530

13-May-2009

03:39

Not Applicable

Package_for_kb970689_sc~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,706

13-May-2009

03:39

Not Applicable

Package_for_kb970689_server_0~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,908

13-May-2009

03:39

Not Applicable

Package_for_kb970689_server_1~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,534

13-May-2009

03:39

Not Applicable

Package_for_kb970689_server~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,718

13-May-2009

03:39

Not Applicable

Package_for_kb970689_winpesrv_0~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,426

13-May-2009

03:39

Not Applicable

Package_for_kb970689_winpesrv~31bf3856ad364e35~ia64~~6.0.1.0.mum

Not Applicable

1,434

13-May-2009

03:39

Not Applicable

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