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after closing of firefox iwant to net browsing. at the time of fire fox opning one message received. the message is firefox already running but not responding. to open a new window you must first close the existing firefox process or restart your system

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opening new window the following message is alerted.

FIREFOX IS ALREADY RUNNING,BUT IS NOT RESPONDING. TO OPEN A NEW WINDOW YOU MUST FIRST CLOSE THE EXITING FIREFOX PROCESS, OR RESTART YOUR SYSTEM.

IAM ALREADY CLOSED THE BROWSER. ANOTHER TIME OPENING THE ABOVE MESSAGE RECEIVED. FIREFOX NOT OPEN. SAME PROBLEM FREQUENTLEY AFFECTED BROWSING.MANY TIMES RESTART WINDOWS REQUIRED. PLEASE SOLVE THE PROBLEM. THANKYOU. KHANJAFFAR

opening new window the following message is alerted. '''FIREFOX IS ALREADY RUNNING,BUT IS NOT RESPONDING. TO OPEN A NEW WINDOW YOU MUST FIRST CLOSE THE EXITING FIREFOX PROCESS, OR RESTART YOUR SYSTEM.''' IAM ALREADY CLOSED THE BROWSER. ANOTHER TIME OPENING THE ABOVE MESSAGE RECEIVED. FIREFOX NOT OPEN. SAME PROBLEM FREQUENTLEY AFFECTED BROWSING.MANY TIMES RESTART WINDOWS REQUIRED. PLEASE SOLVE THE PROBLEM. THANKYOU. KHANJAFFAR

All Replies (1)

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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.

NOTE: Establish a habit of exiting/closing Firefox with Firefox button > Exit or File > Exit to allow an orderly shutdown of Firefox and closing of all of the files that Firefox has open.


  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.



Not related to your question, but...

You may need to update some plug-ins. Check your plug-ins and update as necessary: