Corrupt Powerpoint file, the file extension does not match the I [Solved/Closed]

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1
Registration date
Wednesday November 29, 2017
Last seen
January 23, 2018
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Hello, I have several PowerPoint presentations that I can't open them now it says " file may be corrupted when
use PowerPoint or expansion
file may not match the internal file format " . Please
help, I these presentations have been using them for a long time, I
need help how to recover data?
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1 reply

Posts
19520
Registration date
Wednesday October 8, 2008
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Moderator
Last seen
December 15, 2018
0
Thank you
Perhaps this might help:

https://www.wikihow.com/Fix-a-Corrupted-PowerPoint-PPTX-File

Good Luck