The version of this file is not compatible with the version of Windows you are running. Check your computer's system information to see whether you need an x86 (32-bit) or x64 (64-bit) version of the program, and then contact the software publisher.

[paul-chicago]

I am running Acrobat DC on a 64-bit Windows 7 system.

This morning when I open any pdf file, I get the message:

The version of this file is not compatible with the version of Windows you are running.  Check your computer's system information to see whether you need an x86 (32-bit) or x64 (64-bit) version of the program, and then contact the software publisher.

What do I need to do to fix this?

[~graffiti]

Moved to Acrobat forum.

[Adorobat · Accepted solution]

Hi paul-chicago,

Sorry for the delay in response.      

As per the issue description mentioned above, you are getting above mentioned error when opening any pdf file, is that correct?

Try running Acrobat in compatibility mode by locating Acrobat icon on the desktop > right click > properties > compatibility tab > check the box run this program in compatibility mode for and select Windows Vista from the drop-down options. click Apply OK and check.

Let us know if you need any help.

Shivam