Can't open PDF file

[EQEH]

Hi, i got the attached error message when I tried opening up one of my pdf files. Pls help.

Thank you.

[Test Screen Name]

It probably damaged as the message says, and lost if you don't have a backup/

[default6h9tnynyezmn]

Your reply is not true.  This issue started today with all my PDF files and most were downloaded via Firefox not email.  When I uninstall Acrobat reader it said to close NVIDIA Geforce overlay so now I'm wondering what does that have to do with the Acrobat reader. 

[Test Screen Name]

Thanks for calling me a liar. Good luck with getting help online.

[radzmar]

It doesn't matter how you got those files, the messages lines out that they are damaged. E-Mail is only the most common way to get damages PDFs. If you*re suddenly facing this problem suddenly with multiple PDFs you possibly may have a problem with your computers hard drive.

[Vera5C1E]

Same here, x2 laptops and x3 phones at work have this issue today, I had to reselect Adobe as the default pdf opener. It has now happened to my phone. Going to go look in settings. Good luck.