For Word, see http://word.mvps.org/FAQs/AppErrors/ReRegisterWord.htm.
PowerPoint will also need to be reregistered, but I don't offhand know the
command line for that (possibly powerpnt.exe /regserver).

--
Suzanne S. Barnhill
Microsoft MVP (Word)
Words into Type
Fairhope, Alabama USA
Word MVP FAQ site: http://word.mvps.org
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All my Word files in all my document folders are suddenly appearing as
Wordpad files. The icon in the doc folder is Wordpad, but the file
description next to the icon says DOC file. When I click on the
WordPad icon in the folder to open the files, the Wordpad files open in
WordPad. I can open the Word application, however, and open the
Wordpad files using the Open function, at which time the file opens as
a Word file.

My PowerPoint files are appearing as a file format I don't recognize
and that will not open from the icon (the system does not recognize the
file format). I can open the files from within the PowerPoint
application and have them be PP files.

I tried opening one of the Word files within Word, then saving it, but
it still appears in the document folder as a WordPad file. If I send it
via email, it appears as a WordPad file.

I ran an updated virus check and got nothing.

What the heck is going on? Is this a Windows thing or a Word/Powerpoint
thing?

Thanks!