Article ID: 220610 - Last Review: January 24, 2007 - Revision: 3.1

OLEXP: Outlook Express 4 May Not Run After Uninstalling Internet Explorer 5

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This article was previously published under Q220610
For information about the differences between Microsoft Outlook Express and Microsoft Outlook e-mail clients, click the following article number to view the article in the Microsoft Knowledge Base:
257824  (http://support.microsoft.com/kb/257824/EN-US/ ) OL2000: Differences Between Outlook and Outlook Express
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SYMPTOMS

When you start Outlook Express 4.0 after uninstalling Internet Explorer 5, you may receive the following error message:
Unable to start the program. One of the required components maybe busy or missing. Please check your installation and try again.
Uninstalling and reinstalling Outlook Express 4.0 does not solve the problem.
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CAUSE

This behavior can occur if the Outlook Express 5 version of Inetcomm.dll is still in the Windows\System folder.
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RESOLUTION

To resolve this issue, use the System File Checker tool to extract a new copy of the Inetcomm.dll file from the Windows 98 CD-ROM to the Windows\System folder.

For information about how to extract files, please see the following article in the Microsoft Knowledge Base:
129605  (http://support.microsoft.com/kb/129605/EN-US/ ) How to Extract Original Compressed Windows Files
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APPLIES TO
  • Microsoft Outlook Express 5.0
  • Microsoft Outlook Express 4.01 Service Pack 1
  • Microsoft Outlook Express 4.01 Service Pack 2
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Keywords: 
kberrmsg kbprb KB220610
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