Private RAS connections are disconnected when a new user logs on to a Windows Server 2008 R2-based RDS server

Symptoms

Consider the following scenario:

  • Multiple non-admin users are logged on to a Windows Server 2008 R2-based Remote Desktop Services (RDS) server.

  • One or more users establish private Remote Access Service (RAS) connections in their RDS sessions.

  • A new user logs on to the RDS server.

In this scenario, all private RAS connections are disconnected.

Note Shared RAS connections are not affected by this issue. 

Cause

This behavior is by design. The feature is introduced in Windows Server 2008 to prevent a new user from using a specific route of another user’s private RAS connection during Fast User Switching.

Resolution

To resolve the issue, apply the hotfix, and then create the DisableDisconnectOnLogOn registry entry. For more information, see the Registry Information section.

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 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 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.

Prerequisites

To apply this hotfix, you must be running Windows Server 2008 R2 Service Pack 1 (SP1)

For more information about how to obtain a Windows 7 or a Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

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 create and enable the DisableDisconnectOnLogOn registry entry, follow these steps:

  1. Start Registry Editor.

  2. Locate and then click the following registry subkey:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RasMan\Parameters

  3. On the Edit menu, click New, and then click DWORD(32-bit) Value .

  4. Type DisableDisconnectOnLogOn, and then press Enter.

  5. Right-click DisableDisconnectOnLogOn, click Modify…, type 1 in the Value data box, and then click OK.

  6. Exit Registry Editor.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

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 Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" 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. 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

    6.1.760
    1.
    22xxx

    Windows Server 2008 R2

    SP1

    LDR

  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 R2" section. MUM 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 x64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Rasmans.dll

6.1.7601.22350

344,064

06-Jun-2013

05:19

x64

For all supported IA-64-based versions of Windows Server 2008 R2

File name

File version

File size

Date

Time

Platform

Rasmans.dll

6.1.7601.22350

698,880

06-Jun-2013

04:20

IA-64


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 for Windows Server 2008 R2

Additional files for all supported x64-based versions of Windows Server 2008 R2

File name

Amd64_c0db40c81abab259cb5224788ce0474d_31bf3856ad364e35_6.1.7601.22350_none_75a5a1b2a16f55c9.manifest

File version

Not Applicable

File size

705

Date (UTC)

06-Jun-2013

Time (UTC)

12:04

Platform

Not Applicable

File name

Amd64_microsoft-windows-rasmanservice_31bf3856ad364e35_6.1.7601.22350_none_fd3ddb29d089d9f8.manifest

File version

Not Applicable

File size

12,904

Date (UTC)

06-Jun-2013

Time (UTC)

05:50

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

2,320

Date (UTC)

06-Jun-2013

Time (UTC)

12:04

Platform

Not Applicable

Additional files for all supported IA-64-based versions of Windows Server 2008 R2

File name

Ia64_9f669d046ff38383f4e18ab9b35f3947_31bf3856ad364e35_6.1.7601.22350_none_de815bb91f695370.manifest

File version

Not Applicable

File size

703

Date (UTC)

06-Jun-2013

Time (UTC)

12:04

Platform

Not Applicable

File name

Ia64_microsoft-windows-rasmanservice_31bf3856ad364e35_6.1.7601.22350_none_a120e39c182a71be.manifest

File version

Not Applicable

File size

12,902

Date (UTC)

06-Jun-2013

Time (UTC)

05:28

Platform

Not Applicable

File name

Update.mum

File version

Not Applicable

File size

1,447

Date (UTC)

06-Jun-2013

Time (UTC)

12:04

Platform

Not Applicable


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