extend.dat problems

[Bob]

A user was upgraded to Office 2003. His Outlook starts up and displays the error:

An extension failed to initialize. Can't open file: extend.dat. The file may not exist, blah, blah, blah.

We've tried deleting extend.dat under his profile. We've tried detect and repair. We've tried creating a new Outlook profile. None of this has worked.

I'd really like to repair this without having to reinstall Office. Please, does anybody have an idea on this one?

Thanks,
Bob

 

[Roady [MVP]]

Start Outlook in safe mode; Start-> Run; "path to outlook.exe" /safe

Disable individual add-ins in; Tools-> Options-> tab Other-> button Advanced
Options-> button Add-In Manager and/or COM Add-Ins

Then rename extend.dat to extend.old and start Outlook normally.

Enable the add-ins one by one (restart Outlook after enabling one). When it
fails to load you'll now what add-in needs to be updated.

--
Robert Sparnaaij [MVP-Outlook]
www.howto-outlook.com

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