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