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.

Etsi tuesta

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.

Lue lisää

[SOLVED] A copy of Firefox is already open. Only one copy of Firefox can be open at a time.

  • 1 vastaus
  • 0 henkilöllä on sama ongelma
  • 1 näyttö
  • Viimeisin kirjoittaja Paul

more options

Ive had this issue a couple times now, the method that has worked for me in the past used to be the one that was detailed in this forum post: https://support.mozilla.org/bm/questions/1254772

When using the command listed in the solution: /Applications/Firefox.app/Contents/MacOS/firefox-bin -P, it used to be that there would be two profiles listed in the dialogue box that opens, one corrupted profile and one normal profile, and deleting the corrupted profile would fix it. Now, it just shows one profile "default-release". Other forum posts and troubleshooting stuff online say to force quit through the mac menu, this doesn't work, and if i can avoid it, i would like to not fully re-install Firefox, i have all my passwords saved on there, and I'm not signed in with my Firefox account on this device.

Screenshot provided is of the dialogue box that comes up after running /Applications/Firefox.app/Contents/MacOS/firefox-bin -P

I am on an M1 Macbook Pro, 8GB ram, running macOS Monterey version 12.2

Edit - solved after a restart

Ive had this issue a couple times now, the method that has worked for me in the past used to be the one that was detailed in this forum post: https://support.mozilla.org/bm/questions/1254772 When using the command listed in the solution: /Applications/Firefox.app/Contents/MacOS/firefox-bin -P, it used to be that there would be two profiles listed in the dialogue box that opens, one corrupted profile and one normal profile, and deleting the corrupted profile would fix it. Now, it just shows one profile "default-release". Other forum posts and troubleshooting stuff online say to force quit through the mac menu, this doesn't work, and if i can avoid it, i would like to not fully re-install Firefox, i have all my passwords saved on there, and I'm not signed in with my Firefox account on this device. Screenshot provided is of the dialogue box that comes up after running /Applications/Firefox.app/Contents/MacOS/firefox-bin -P I am on an M1 Macbook Pro, 8GB ram, running macOS Monterey version 12.2 Edit - solved after a restart
Liitetyt ruutukaappaukset

Muokattu , muokkaaja cor-el

Kaikki vastaukset (1)

more options

Thank you for letting us know.