Who knows what's with the files?

Question

Adobe Illustrator

Hello. I have several workstations in my office all using Illustrator, the other day I got an unreadable error file. The error message when I try to open the saved .ai file says "The file is corrupted and cannot be restored". I can open PDFs of the same file within Illustrator, but not .ai . I've tried Adobe's way of "placing" the original file into a new file, but to no avail. The fact is that some damaged files give an error and some do not. Does anyone know why this is happening?
I have CC 2017 21.0.0 adobe illustrator, how to fix a corrupted file?

Answer 1

I can open PDFs of the same file within Illustrator, but not .ai . I've tried Adobe's way of "placing" the original file into a new file, but to no avail.

It's very hard to understand. But:
Unfortunately not.

Answer 2

I would like to know the version of the chandelier, the availability of a license - because a lot depends on this.
Here on the face of damage to the file (s) This can happen from various factors, software change, failure, inept handling. conflict on .... and so on.
Most likely you can forget about the file ... just don't be lazy and try to drive it away.