Just adding to the discussion, smth i didn’t find on internet:
I actualized libreoffice, and pptx started getting charged worse than before, before being a perfect charging actually, as far as I knew; and going back to the previous version didn’t work.
Fixing the appdata user folder didn’t work too.
I discovered that downloading a new version of the pptx fixed it, idk how.
I then tried to open the old file with MS power point viewer, which is free, and the pptx file appears corrupted.
So basicly somehow libreoffice corrupted my pptx files.
I was only trying with one the whole time though, so idk if it corrupted only one or a whole folder or wtv.
Also… I tried opening a .docx (MSword) document, and it wouldn’t open correctly with libreoffice, but it would open correctly iwth wordpad; but now after i opened correctly the downloaded pptx-es it will open .docx correctly…
And it wasn’t the user folder, because i saw the problem not fixing and left the old folder…
Idk. Also know that the old pptx is still not working, it remains corrupted. But it’s a single one, and I don’t remember if I tried others and they were opening correctly or not.