What type of file did you try to open? PowerPoint will open its own files
(PPT/PPTX etc) and some others, but sometimes people try to open files instead
of importing them and get this type of message.
If it's a PowerPoint file, it may be corrupt. How did it get onto your PC?
Also, mention what version of PPT you have.
> What do I do to reset
> something or to fix whatever is wrong - to enlarge PowerPoint to accept the
> file I want to open or whatever else is wrong ?????
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PPT Frequently Asked Questions
http://www.pptfaq.com/
PPTools add-ins for PowerPoint
http://www.pptools.com/