Microsoft KB Archive/254842

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OFF2000: Setup Detects Files As Present When They Are Actually Not Installed

Article ID: 254842

Article Last Modified on 1/27/2007


  • Microsoft Windows 95
  • Microsoft Windows 2000 Standard Edition
  • Microsoft Office 2000 Premium Edition
  • Microsoft Office 2000 Professional Edition
  • Microsoft Office 2000 Standard Edition
  • Microsoft Office 2000 Small Business Edition
  • Microsoft Office 2000 Developer Edition
  • Microsoft Access 2000 Standard Edition
  • Microsoft Excel 2000 Standard Edition
  • Microsoft FrontPage 2000 Standard Edition
  • Microsoft Outlook 2000 Standard Edition
  • Microsoft PowerPoint 2000 Standard Edition
  • Microsoft Word 2000 Standard Edition

This article was previously published under Q254842


When you install Microsoft Office under Microsoft Windows 95 on a computer that has both Windows 95 and Windows 2000 installed, the installation process detects files as being installed when in fact they are not. The result of this is that you see messages like the following message:

    Version Conflict
    A file being copied is older than the file currently on your computer.
    It is recommended that you keep your existing file:
    File name: callconf.dll
    Description: Call Control Module
    Your version: 4.4.3385

However, when you accept the recommendation to keep existing files and subsequently use your system, you receive error messages like the following error message:

Windows Update
An error occurred calling "DllRegisterServer" in
"C:\PROGRA~1\INTERN~1\Connection Wizard\trialoc.dll".
(HRESULT = 80070078)

NOTE: You may receive similar error messages for other files.


This problem occurs when you have multiple operating systems installed on the same partition. For example, you may have Microsoft Windows 95 and Microsoft Windows 2000 Professional both installed on drive C.


Each operating system must be installed on a separate partition. For example, install Microsoft Windows 95 on drive C and Microsoft Windows 2000 Professional on drive D.

Additional query words: OFF2000 dual-boot multi-boot dual-booting

Keywords: kbfix kbprb KB254842