How to recover a corrupted file .pdf ?

Hey.
I received a letter with the application in PDF file format. When I tried to open a PDF file , it shows an error message that says : "format Error : not a valid PDF or the file is corrupted" Then, I tried to open my .pdf other tools .pdf files, but they again showed the same error message .


How to solve it ?


All thanks...

Which application are you talking about?

Maybe the file is corrupted or is not compatible with your system.

I think you either have to ask the person that sent it to you to send it back.

Probably not much help here on the PDF issue, being that this is a Nikon photography forum rather than Adobe product support.