Fillable PDF save afert modfyinh

Hi all

we recently upgraded some of our users to the latest Adobe Pro (2024.002.20759). One of our user has a weird problem

Platform=Windows 10 22h2

The user in questions created several fillable PDF (with a 2017 Pro version) that she modifies overtime, recently, after her migration to the new version, she started to have issues where she could do some modification but after a while, the PDF woulf say that the document was read-only and the save-as option would not even work giving out errors.

On my side, i can look through Active directory to see which files a user is opening but for that specific person, i could not see her opened PDF.

If we stop everything, open the same file, i see her in the file on my side, she starts to modify but after a while, same thing, it's like she never opened the PDF, it's just on her session and she can't save it in any way.

-The windows preview pane is not set on this machine so it doesn't lock up the PDF

-no one is opening the file.

-The pdf has no securities before nor after

-Document is not signed

All other network files are working just fine and are not being cut off nor do we have network interruption on our file server.

I even Checked if she had files on the cloud storage that could conflict but it's empty

Any Help would be appreciated