When I try to access Firefox I get this message: "Firefox is already running, but is not responding. To open a new windwo, you must first close the existing Firefox process, or restart your computer."
When I click on Firefox I get a window that says: "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your computer." I can't see where anything is running on firefox. I restarted the comuter and I shut down the computer. I also ran a full scan of the computer.
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Sorry I am a PC user but have you seen
Firefox will be hanging for some reason. The quick solutions to kill the process and try again. The next step is to try to see if it will start and exit normally a couple of times, if so the problem is solved. If not the reason needs further investigation.
See firefox hangs
An immediate likely culprit after repeated problems are the duplicate session restore files, as discussed in the above KB article.