[Mozilla Enterprise] Running two simultaneous instances with separate profiles

[Stephen Dowdy]

On 8/8/19 1:52 PM, Thane K. Sherrington wrote:
> As I understand it, I can create two profiles in Firefox and then open Firefox with:
> 
> -no-remote -P "Profile1"
> 
> -no-remote -P "Profile2"
> 
> And have two instances of FF running with different profiles. That appears to work, but when I click a link in my email (Thunderbird) then either I get a message saying that FF is already running, Close or Cancel (if both instances are running) or if only one instance is running, then the link opens the other instance.
> 
> Is there a way to set one to be a primary instance?

Thane,

the '-no-remote' is your problem.  it says a remote application can't issue an openurl call to that instance.
You're looking for the '-new-instance' on the activation of the two of those.  then either can accept an openurl remote call.
(that's probably not what you want, though -- so likely only have -no-remote on one of them?)

The alternative is changing thunderbird to make explicit calls to a THIRD profile instance:

firefox -P thunderbird-ffox %u

that way it won't affect the other two running profiles.