Microsoft KB Archive/931697

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Error message when you try to upgrade an earlier version of Windows to Windows Vista: "Windows could not update the computer's boot configuration"

Article ID: 931697

Article Last Modified on 3/15/2007


  • Windows Vista Business
  • Windows Vista Enterprise
  • Windows Vista Home Basic
  • Windows Vista Home Premium
  • Windows Vista Ultimate
  • Windows Vista Enterprise 64-bit edition
  • Windows Vista Home Basic 64-bit edition
  • Windows Vista Home Premium 64-bit edition
  • Windows Vista Ultimate 64-bit edition
  • Windows Vista Starter

Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows registry


When you try to upgrade an earlier version of a Microsoft Windows operating system to Windows Vista, you receive the following error message:

Windows could not update the computer's boot configuration. Installation cannot proceed.

If you examine the contents of the drive:\$WINDOWS.~BT\Sources\Panther\setupact.log file that Windows Vista creates, you notice the following information:

<date> <time>, Info       [0x060216] IBS    CallBack_MungeBootIni:Failed to modify boot entries GLE = 50

In this log entry, GLE error code 50 corresponds to the following error message:


Note Generally, drive is drive C on the computer. However, Windows Vista creates the temporary installation folder depending on many factors. Therefore, this drive may be any supported drive that Windows Vista detects.


This issue may occur if the UpperFilters registry entry has become corrupted or is set to a blank value. Certain programs that may be installed on the computer may have modified this registry entry.

This registry entry is located in the following location:


Value name: UpperFilters
Value type: REG_MULTI_SZ
Value data: PartMgr (default)


Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

To resolve this issue, restore the default value for the UpperFilters registry entry, and then restart the computer. To do this, follow these steps:

  1. Click Start, click Run, type regedit, and then click OK.
  2. Locate and then click the following registry subkey:


  3. In the results pane, right-click UpperFilters, and then click Modify.
  4. In the Value data box, type PartMgr, and then click OK.
  5. Exit Registry Editor, and then restart the computer.
  6. Insert the Windows Vista DVD, and then upgrade the computer to Windows Vista.


To work around this issue, use the Windows Vista DVD to start the computer, and then perform a new installation of Windows Vista.

Keywords: kbupgrade kbdeployment kbexpertiseinter kbexpertiseadvanced kbexpertisebeginner kbhardware kbtshoot kbprb KB931697