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You cannot upgrade a Windows-based operating system when you have Windows PowerShell 1.0 installed

Support for Windows XP has ended

Microsoft ended support for Windows XP on April 8, 2014. This change has affected your software updates and security options. Learn what this means for you and how to stay protected.

Support for Windows Server 2003 ended on July 14, 2015

Microsoft ended support for Windows Server 2003 on July 14, 2015. This change has affected your software updates and security options. Learn what this means for you and how to stay protected.

Support for Windows Vista Service Pack 1 (SP1) ends on July 12, 2011. To continue receiving security updates for Windows, make sure you're running Windows Vista with Service Pack 2 (SP2). For more information, refer to this Microsoft web page: Support is ending for some versions of Windows.
Symptoms
When you try to upgrade the operating system on a computer that has Windows PowerShell 1.0 installed, the upgrade fails. Additionally, the Compatibility Check feature displays the following message:
You must make the following changes before upgrading Windows:
Uninstall the following program:
  • Windows PowerShell
Workaround
To work around this problem, eliminate the Compatibility Check error. To do this, follow these steps:
  1. Uninstall Windows PowerShell 1.0.
  2. Perform the operating system upgrade again.
  3. Reinstall Windows PowerShell 1.0.
More information

How to uninstall Windows PowerShell 1.0

To uninstall Windows PowerShell 1.0, follow the steps that are appropriate to your operating system.

Windows Vista

  1. Click Start, type appwiz.cpl in the Start Search box, and then press ENTER.
  2. In the list of tasks, click View Installed Updates.
  3. In the Uninstall an update list, right-click Windows PowerShell(TM) 1.0 (KB928439), and then click Uninstall.
  4. Follow the instructions to uninstall Windows PowerShell 1.0.

    Note If you disable Windows PowerShell by using the Turn Windows Features on or off option, this does not satisfy the Compatibility Check process. You must uninstall Windows PowerShell.

Windows Server 2003

  1. Click Start, click Run, type appwiz.cpl, and then click OK.
  2. Click to select the Show updates check box.
  3. In the Currently installed programs and updates list, find the entry for the hotfix that installed Windows PowerShell 1.0. Depending on the installation package that was used, this entry resembles one of the following:
    • Hotfix for Windows Server 2003 (KB926139)
    • Hotfix for Windows Server 2003 (KB926140)
    • Hotfix for Windows Server 2003 (KB926141)
  4. Click the Windows PowerShell hotfix entry, and then click Remove.
  5. Follow the instructions to uninstall the hotfix for Windows PowerShell 1.0.
Note By default, if Windows Server 2003 Service Pack 2 is installed on the system, PowerShell 1.0 cannot be uninstalled. To resolve this issue, follow these steps:
  1. Follow the steps in the following Microsoft Knowledge Base (KB) article, 931941, to trust Windows PowerShell 1.0 that was introduced in KB926139:
    931941 The Oobmig.exe tool is available to restore trust to out-of-band updates after you install Windows Server 2003 Service Pack 2
    Note You may have to restart the computer.
  2. Check whether the update can be uninstalled by using Control Panel. If the update cannot be uninstalled in this manner, uninstall PowerShell manually from the following location:
    C:\WINNT\$NtUninstallKB926139$\spuninst\spuninst.exe
    Note You may have to restart the computer.

Windows XP

  1. Click Start, click Run, type appwiz.cpl, and then click OK.
  2. Click to select the Show updates check box.
  3. In the Currently installed programs and updates list, click Windows PowerShell(TM) 1.0, and then click Remove.
  4. Follow the instructions to uninstall Windows PowerShell 1.0.
Click one of the following links to reinstall Windows PowerShell 1.0, depending on the version of the operating system and on the language preference:

For more information about Windows PowerShell 1.0 English language installation packages for Windows Server 2003 and for Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:
926139 Windows PowerShell 1.0 English Language Installation Packages for Windows Server 2003 and for Windows XP
For more information about the Windows PowerShell 1.0 localized installation package for Windows Server 2003 and for Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:
926140 Windows PowerShell 1.0 Localized Installation Package for Windows Server 2003 and for Windows XP
For more information about the Windows PowerShell 1.0 Multilingual User Interface (MUI) language pack for Windows Server 2003 and for Windows XP, click the following article number to view the article in the Microsoft Knowledge Base:
926141 Windows PowerShell 1.0 Multilingual User Interface (MUI) Language Pack for Windows Server 2003 and for Windows XP
For more information about the Windows PowerShell 1.0 installation package for Windows Vista, click the following article number to view the article in the Microsoft Knowledge Base:
928439 Windows PowerShell 1.0 Installation Package for Windows Vista
For more information about Windows PowerShell, visit the following Microsoft Web sites:
Properties

Article ID: 950376 - Last Review: 10/16/2012 03:07:00 - Revision: 1.0

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