Windows 10 reached EOS (end of support) on October 14, 2025. For more information, see this article.

Avatar for Username

Pomoc přepytać

Hladajće so wobšudstwa pomocy. Njenamołwimy was ženje, telefonowe čisło zawołać, SMS pósłać abo wosobinske informacije přeradźić. Prošu zdźělće podhladnu aktiwitu z pomocu nastajenja „Znjewužiwanje zdźělić“.

Dalše informacije

Tuta nitka je so archiwowała. Prošu stajće nowe prašenje, jeli pomoc trjebaće.

Firefox will not open, but computer thinks it IS open

  • 1 wotmołwa
  • 9 ma tutón problem
  • 16 napohladow
  • Poslednja wotmołwa wot TonyE

tomellis
tomellis
dalše nastajenja

I just got a new iMac, and wanted to transfer all my old Firefox info from my old machine. I downloaded the newest version of Firefox, and it seemed to work fine. Then I tried to move my profiles to the new machine (both on same network). Then I don't know what happened. I had to close Firefox for some reason, and when I tried to reopen it was told by my Mac that "A copy of Firefox is already open. Only one copy of Firefox can be open at a time". I checked in Finder to see if I could force-quit Firefox, but according to Finder firefox was NOT running.

I first did a restart of the computer, but when I tried to open Firefox got the same message. Then I threw my Firefox application away and downloaded a new one. No help, same error message.

So how do I convince my Mac that Firefox isn't already running? Help, please!!!

(edited to stop the post from scrolling off to the right)

I just got a new iMac, and wanted to transfer all my old Firefox info from my old machine. I downloaded the newest version of Firefox, and it seemed to work fine. Then I tried to move my profiles to the new machine (both on same network). Then I don't know what happened. I had to close Firefox for some reason, and when I tried to reopen it was told by my Mac that "A copy of Firefox is already open. Only one copy of Firefox can be open at a time". I checked in Finder to see if I could force-quit Firefox, but according to Finder firefox was NOT running. I first did a restart of the computer, but when I tried to open Firefox got the same message. Then I threw my Firefox application away and downloaded a new one. No help, same error message. So how do I convince my Mac that Firefox isn't already running? Help, please!!! ''(edited to stop the post from scrolling off to the right)''

Wot TonyE změnjeny

Wšě wotmołwy (1)

TonyE
TonyE
  • Moderator
dalše nastajenja

For details of how to fix this see this site - http://kb.mozillazine.org/Profile_in_use