How can I configure Firefox to check if a session is already open before you start a new?

I have an elderly parent who always dbl_clks desktop icon when he wants to join his social media site, even if he never sold the last of his window he ran. The result is that there soon several windows ff running the same (like 20-30) while Windows allows more. I would like to put something so that when they click the icon on the desktop, it checks to see if ff is already running, and if so, it's just max that window.

Thank you...

Another possibility would be to add-no.-line switch remote control in combination with the current profile of the command line in the shortcut to the desktop (-no - remote 'profile name' Pei).

Then you get a message that the profile is already in use when this icon is clicked, another time while Firefox is already running.
This could be confusing if.

This switch is normally used to open multiple windows of Firefox with a separate profile.

Tags: Firefox

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