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new windows 11 build, cannot use Firefox

  • 3 replies
  • 1 has this problem
  • 112 views
  • Last reply by jonzn4SUSE

creighd
creighd
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I have been unable to get Firefox to open in my new windows 11 build. I install Firefox, try to launch the program and get a message that an instance of Firefox is running and must be closed to run my requested launch. I use taskbar and there is no instance of any Firefox process running. I have uninstalled and reinstalled and the same message comes up. I installed an old version of Firefox from 2012 and it works but I get security notices about it and there is no update option available. Is Microsoft blocking my use of Firefox? I went to the Microsoft store and downloaded their version and the same thing happened. Any suggestions will be greatly appreciated.

I have been unable to get Firefox to open in my new windows 11 build. I install Firefox, try to launch the program and get a message that an instance of Firefox is running and must be closed to run my requested launch. I use taskbar and there is no instance of any Firefox process running. I have uninstalled and reinstalled and the same message comes up. I installed an old version of Firefox from 2012 and it works but I get security notices about it and there is no update option available. Is Microsoft blocking my use of Firefox? I went to the Microsoft store and downloaded their version and the same thing happened. Any suggestions will be greatly appreciated.

Chosen solution

See if something on this page helps. https://support.mozilla.org/en-US/kb/firefox-already-running-not-responding#firefox:win11:fx114

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jonzn4SUSE
jonzn4SUSE
  • Top 10 Contributor
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Chosen Solution

See if something on this page helps. https://support.mozilla.org/en-US/kb/firefox-already-running-not-responding#firefox:win11:fx114

creighd
creighd Question owner
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At first I did not find the page helpful. However, after seeing what it was recommending, I just uninstalled Firefox and searched for all remaining Firefox files and deleted them all. I then reinstalled Firefox and all is good. When trying to access routines described on the web page, I was still getting the firefox instance open problem. That is when I decided to go nuclear.

jonzn4SUSE
jonzn4SUSE
  • Top 10 Contributor
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That's funny! So issue resolved? If so, mark it as resolved.