How to recover damaged PDF file?

[francisiname]

There is a file created in one of Adobe programs. The file was damaged and in the native program doesn't open. Extension of the *.indd file.
In attempt to open writes: "file ... is damaged (Error code: 4)".
Thus without problems it is copied anywhere.
The file was lying quietly on the disk a few months after finishing work with him and manufacturing PDF. And here suddenly it was required to change a source code. And it doesn't open.
Whether it is possible to restore somehow, even if with loss of some part of data?

[LaxLoafer]

If the file is corrupt you'll probably have a hard time trying to recover the contents. That's why it's important to keep backup copies :-)

In the unlikely event you don't have a backup, try looking for a temporary file. Sometimes applications will create such files while a document is open and delete them when finished. It's just possible a temporary file may still exist, especially if the fault that caused the corruption also terminated the application unexpectedly.

Which operating system are you using?

[miloaccountant]

If it was good, it would not break. There is, of course, a virus probability and almost zero probability of an undetected error of reading from a disk. Try to remove/transfer the folder: \Documents and Settings.......\Application Data\Adobe\InDesign Your Version Adobe
Then try to open the file.
You can look still at this forum. Maybe you will find useful recommendations.
https://social.msdn.microsoft.com/Forums/en-US/7b77f49d-c8f4-4247-aa73-3084c75e876d/how-to-repair-a-pdf-document?forum=officegeneral

[almostbob]

What version of InDesign are you using to open the file, old files show as corrupt in newer versions