I use Adobe Acrobat 9 pro. Sometimes PDFs don't open and when I go to the task manager, there are two or three processes of Adobe running even though I don't have any PDFs open. I end the processes and then I can open a PDF. Any ideas on how to fix this?
This is an old thread. Did you ever solve the problem? If not, here's something simple to check. One of the multiple Adobe processes could be its update checker, which would not cause the problem. If you have multiple copies of Acrobat running, that could do it. Open MSCONFIG (type msconfig in the start menu search or run box). Go to the startup tab and see if Acrobat appears more than once and is check-marked more than once. If so, uncheck the extra one and click Apply. Go to the General tab and choose Selective Startup. The change will occur the next time you boot up.