This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

ابحث في الدعم

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

Firefox is not visibly running, but says 'cannot start as already running'. How do I stop it?

  • 2 (ردّان اثنان)
  • 24 have this problem
  • 3 views
  • آخر ردّ كتبه TonyE

more options

Firefox comes up with ' is already running....close and restart', but no visible firefox is running and even in task manager it is not running. How do I 'stop' firefox? Restarting the computer did not help

This happened

Just once or twice

User Agent

Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)

Firefox comes up with ' is already running....close and restart', but no visible firefox is running and even in task manager it is not running. How do I 'stop' firefox? Restarting the computer did not help == This happened == Just once or twice == User Agent == Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)

All Replies (2)

more options
more options

i have same prob but not just once or twice, regularly-at least once a day- and still does it after restart. it's diving me mad....arghh