Adobe's portable document format (PDF) has become a standard for exchanging and distributing documents. PDF files look like the original document would look if it were printed, and can be read on just ...

Q: Sometimes when I try to open a file or e-mail I get the message: "The selected file has an extension (PDF) that is not recognized by Windows Media Player but the player may be able to play it.

Q. I cannot open Adobe PDF files on the Internet while using the latest Adobe Reader software on my new Windows XP computer. When I click on a PDF file when I am on the Internet a window opens and ...

In the latest move to lock down its applications from attack, Adobe announced today it will add a default sandboxing feature to the next version of the Adobe Reader software. The new "Protected Mode" ...