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Allow firefox developer and firefox to run at the same time doesn't work on iMac high sierra

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  • Last reply by FredMcD

ecofox
ecofox
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In Firefox developer preferences, I have the "Allow firefox developer edition and firefox to run at the same time" checkbox checked. Firefox Developer still refuses to allow Firefox to open. Will this actually work at some point? Does Firefox Developer Edition need to be restarted for this preference to take effect?

iMac, macOS High Sierra 10.13.2

In Firefox developer preferences, I have the "Allow firefox developer edition and firefox to run at the same time" checkbox checked. Firefox Developer still refuses to allow Firefox to open. Will this actually work at some point? Does Firefox Developer Edition need to be restarted for this preference to take effect? iMac, macOS High Sierra 10.13.2

All Replies (1)

FredMcD
FredMcD
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I'm not sure about developer but running more than one version of Firefox needs a special command.

Example (all on one line); C:\PROGRA~1\MOZILL~1\firefox.exe -no-remote -new-instance -new-window -P Firefox_v_57

https://developer.mozilla.org/en-US/docs/Mozilla/Command_Line_Options 


Usage: C:\PROGRA~1\MOZILL~1\firefox.exe [ options ... ] [URL]
      where options include:

 -h or -help        Print this message.
 -v or -version     Print Firefox version.
 -P <profile>       Start with <profile>.
 -migration         Start with migration wizard.
 -ProfileManager    Start with ProfileManager.
 -no-remote         Do not accept or send remote commands; implies -new-instance.
 -new-instance      Open new instance, not a new window in running instance.
 -UILocale <locale> Start with <locale> resources as UI Locale.
 -safe-mode         Disables extensions and themes for this session.
 -console           Start Firefox with a debugging console.
 -jsconsole         Open the Error console.
 -browser           Open a browser window.
 -new-window  <url> Open <url> in a new window.
 -new-tab     <url> Open <url> in a new tab.
 -preferences       Open Options dialog.
 -search     <term> Search <term> with your default search engine.
 -setDefaultBrowser Set this app as the default browser.