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When I close Firefox then try to open it again, it informs me it is already running and continues to do so regardless of how many times I restart the computer.

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I bought a new computer. I installed Firefox 7.0 then updated to 8.0. When I was finished with Firefox, I closed it. Later when I attempted to open it I was greeted with the message Firefox is already running. It suggested I restart the computer. I did so and continued to receive the same message. Surely, shutting the computer off should close Firefox. I have to use Internet Explorer to contact you.

I bought a new computer. I installed Firefox 7.0 then updated to 8.0. When I was finished with Firefox, I closed it. Later when I attempted to open it I was greeted with the message Firefox is already running. It suggested I restart the computer. I did so and continued to receive the same message. Surely, shutting the computer off should close Firefox. I have to use Internet Explorer to contact you.

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Sounds like Firefox is "hanging at exit". That problem is frequently caused by an Extension or a Plugin. Read all of the following articles.

  1. Stop the Firefox process:
  2. Why Firefox may hang:
  3. Use Firefox Safe Mode to find a problem with an Extension or Plugin:


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