Fix damaged PDF
When trying to open a specific document I save I get the following error: "Adobe Reader could not open … because it is either not a supported file type or because the file has been damaged (for example, it was sent as an email attachment and wasn’t correctly decoded)."
This PDF was saved by myself to my desktop as a PDF yesterday morning. Unfortunately now it does not want to open. It was not emailed. The size of the pdf is 46.6Kb. I have uninstalled and reinstalled Acrobat Reader DC, restarted my computer, turned off the protected view...no luck. This is also the ONLY file that is not working out of the 3 I saved early.
I keep seeing the below image as the fix on this forum but where am putting this HKLM/HKCU information in? Can any break down the "resolution" below so I can retrieve my PDF? Or another fix? Thank you!

