I'm running Windows XP SP3, with Adobe Reader 10.1.3. I also have McAfee.
I have always been able to open PDFs in Adobe Reader with no trouble. Now, all of a sudden, I can't.
If I turn off McAfee real time scanning and firewall, then the PDFs open just fine. As soon as McAfee is enabled, they won't open. It does this for all PDFs.
How do I fix it?