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.

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

Wannan tattunawa ta zama daɗaɗɗiya. Yi sabuwar tambaya idan ka na bukatar taimako.

I can't open Firefox Brower on my laptop.

  • 3 amsoshi
  • 2 sa na da wannan matsala
  • 1 view
  • Amsa ta ƙarshe daga McCoy

more options

I keep getting window message " Firefox is already running. The old firefox process must be closed. " I have tried uninstalling and reinstalling but keep getting the same problem

I keep getting window message " Firefox is already running. The old firefox process must be closed. " I have tried uninstalling and reinstalling but keep getting the same problem

All Replies (3)

more options

Hello djrpai,

Would you please take a look at these articles :

https://support.mozilla.org/en-US/kb/firefox-already-running-not-responding

and :

https://www.askvg.com/fix-firefox-is-already-running-but-is-not-responding-error-message/

'Hope one of those will work for you .....

more options

Do you by any chance use Kaspersky ?

I'm asking because of the OPs last post in this thread :

https://support.mozilla.org/en-US/questions/1271943

Also see :

Two users having the same problem in this thread :

https://support.mozilla.org/en-US/questions/1272635

And another one here :

https://support.mozilla.org/en-US/questions/1272576

more options

Just in case that you are using Kaspersky; please see this thread :

https://support.mozilla.org/en-US/questions/1272635