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"Firefox already open" msg prevents launching browser

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Using with OS 10.12.6 Tried using Refresh Firefox, then was unable to open the browser, with a message "Close Firefox" indicating the a copy as already open. I have tried rebooting, deleting and reloading Firefox, opening in Safe mode, etc, without success.

Help!

Using with OS 10.12.6 Tried using Refresh Firefox, then was unable to open the browser, with a message "Close Firefox" indicating the a copy as already open. I have tried rebooting, deleting and reloading Firefox, opening in Safe mode, etc, without success. Help!

Yderligere systemdetaljer

Program

  • User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/603.3.8 (KHTML, like Gecko) Version/10.1.2 Safari/603.3.8

Yderligere information

Luk
FredMcD
  • Top 10 Contributor
4259 løsninger 59635 svar
What's your Firefox version? https://support.mozilla.org/kb/Firefox+is+already+running+but+is+not+responding https://www.basezap.com/cant-open-firefox-because-a-copy-of-firefox-is-already-open-mac/ https://apple.stackexchange.com/questions/196771/cant-open-firefox-because-a-copy-of-firefox-is-already-open http://kb.mozillazine.org/Firefox.exe_always_open