Microsoft KB Archive/926799

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An earlier version of an Office program may not be removed when you install a 2007 Office program

Article ID: 926799

Article Last Modified on 10/15/2007


  • Microsoft Office Basic 2007
  • Microsoft Office Enterprise 2007
  • Microsoft Office Home and Student 2007
  • Microsoft Office Professional 2007
  • Microsoft Office Professional Plus 2007
  • Microsoft Office Standard 2007
  • Microsoft Office Ultimate 2007
  • Microsoft Office Access 2007
  • Microsoft Office Excel 2007
  • Microsoft Office InfoPath 2007
  • Microsoft Office OneNote 2007
  • Microsoft Office Outlook 2007
  • Microsoft Office PowerPoint 2007
  • Microsoft Office Project Professional 2007
  • Microsoft Office Project Standard 2007
  • Microsoft Office Publisher 2007
  • Microsoft Office Visio Professional 2007
  • Microsoft Office Visio Standard 2007
  • Microsoft Office Word 2007


When you upgrade to a 2007 Microsoft Office program, the earlier version of the Microsoft Office program may not be removed.

Note When you upgrade, you would expect the earlier version of the Office program to be removed.


This issue may occur if the following conditions are true:

  • The original installation source for the earlier Office program is unavailable.
  • Some files in the following folder were deleted, removed, or renamed:



To work around this issue, follow these steps:

  1. Click Start, click Control Panel, and then click Add or Remove Programs.
  2. In the Currently installed programs list, click the earlier version of Office, and then click Remove.
  3. Follow the prompts to remove the earlier version of Office.
  4. Repair the 2007 Office program installation. To do this, follow these steps:
    1. Click Start, click Control Panel, and then click Add or Remove Programs.
    2. In the Currently installed programs list, click the installed version of the 2007 Office program, and then click Change.
    3. Click Repair, and then click Continue.


If an earlier version of an Office program is not removed when the 2007 Office program is installed, two versions of Microsoft Outlook may remain installed. If this occurs, Outlook may be unstable and may cause unpredictable results. For more information about a related issue, click the following article number to view the article in the Microsoft Knowledge Base:

926196 Error message when you try to start Outlook 2003: "MAPI32.DLL is corrupt or the wrong version"

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Keywords: kbtshoot kbsetup kbprb kbexpertisebeginner KB926799