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I get the following message when trying to open Firefox: "Firefox is already running, but is not responding. To open a new window, you must first close the existing Firefox process, or restart your system."

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vincef99
vincef99
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I have tried rebooting the PC and can open Firefox once but if a close and try to reopen, same message pops up. Have also unistalled and reinstalled, to no avail.

I have tried rebooting the PC and can open Firefox once but if a close and try to reopen, same message pops up. Have also unistalled and reinstalled, to no avail.

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TonyE
TonyE
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For possible causes see "Firefox is already running but is not responding" error - How to fix.

TonyE
TonyE
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ignore this duplicate post

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