Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

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.

more options

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.

All Replies (1)

more options

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:


If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.