Enable Windows Deployment Services to support the SSM protocol in Windows Server 2008 R2

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 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

To apply this hotfix, you must have the Boot.wim of Windows 7 or of Windows Server 2008 R2. Additionally, you must have a computer on which the Dism.exe tool is installed.

Note By default, the Dism.exe tool is installed with Windows 7 and with Windows Server 2008 R2. The Dism.exe tool is also included in one of the following packages:

• Windows 7 OEM Preinstallation Kit (OPK)
• Windows Automated Installation Kit (AIK) for Windows 7

How to integrate this hotfix into the Boot.wim file

1. Extract the Windows6.1-KB2495879-x64.cab file from the hotfix package. Assume that you save the Windows6.1-KB2495879-x64.cab file to the C:\Test\Updates folder.
2. Copy the Boot.wim file to a folder for update. Assume that the folder is C:\Test\Images.
   
   Note If you want to use the Out-of-box Boot.wim file, that file is located in the Sources folder of the Windows 7 or Windows Server 2008 R2 installation media.
3. Create a folder to mount images. Assume that the folder is C:\Test\Offline.
4. Open a Command Prompt window by using the Run as administrator option.
5. Run the following command to mount the second image of the Boot.wim file:
   
   Dism /Mount-Wim /WimFile:C:\Test\Images\Boot.wim /Index:2 /MountDir:C:\Test\Offline
6. Run the following command to extract the Wdstptc.dll file from the Windows6.1-KB2495879-x64.cab file:
   
   Expand -R C:\test\updates\Windows6.1-KB2495879-x86.cab C:\test\updates
7. Run the following command to replace the Wdstptc.dll file in the sources folder:
   
   xcopy C:\Test\Updates\Wdstptc.dll C:\Test\Offline\sources /Y
8. Run the following command to load the registry hive of the image:
   
   Reg load HKLM\test C:\Test\Offline\Windows\System32\config\SOFTWARE
9. Open Registry Editor, and then locate the following registry subkey:
   
   HKEY_LOCAL_MACHINE\Test\Microsoft\Windows\CurrentVersion\WDSTPTC\SSM
   
   Note If the WDSTPTC\SSM subkey does not exist, you must manually create it.
10. Under the SSM registry subkey, create a DWORD value, name it AllowSSM, and then set the value to 1.
11. Exit Registry Editor.
12. Run the following command to unload the registry hive of the image.
    
    Reg unload HKLM\test
13. Run the following command to commit the changes and unmount the image.
    
    Dism /Unmount-WIM /MountDir:C:\Test\Offline /Commit

Important The value of the AllowSSM registry entry is necessary to make Windows Deployment Services support SSM. To verify that this value is set correctly, follow these steps:

1. Start a client computer by using this updated Boot.wim file.
2. Use SHIFT+F10 to open a Command Prompt window.
3. Type regedit, and then press ENTER.
4. In Registry Editor, verify that the value of the AllowSSM registry entry is set to 1.

Restart information

You do not have to restart the computer after you apply this 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 7 and 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.

  Version	Product	SR_Level	Service branch
  6.1.760 0. 20xxx	Windows 7 and Windows Server 2008 R2	RTM	LDR
  6.1.760 1. 21xxx	Windows 7 and 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 and for Windows 7" 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 the x86-based version of Windows 7 boot images

For the x64-based version of Windows 7 boot images and of Windows Server 2008 R2 boot images

For the IA-64-based version of Windows Server 2008 R2 boot images