Firefox: How to open each browser in a separate process?

If one crashes, I don't want them all to crash.  How do I fix that?

Thank you
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war1Connect With a Mentor Commented:
Greetings, fuze44 !

You can open separate windows of Firefox for different webpages.  But you cannot separate the Firefox processes such that if one window crash, it will not affect the other windows.

Best wishes!
b0lsc0ttConnect With a Mentor IT ManagerCommented:

I believe there is an exception to the first reply.  The Firefox environment variable MOZ_NO_REMOTE can be set to 1 and firefox will open up in another process.  However I am almost positive that another profile is required.  The intended use of this would be for someone developing extensions.  This page ( has some information on the environment variable and other development information.

If you are just browsing the Internet and/or don't want to use multiple profiles, then there is no way to have firefox windows open in a new process.  Whether you use a new tab or a new window, firefox is set up to use the existing firefox.exe process.

I hope this information is helpful.  I have not used the feature but let us know if you have any questions.

scrathcyboyConnect With a Mentor Commented:
correct, if you run one instance of FF and it dies, all windows will close.  But there is an easy way to get around this, which I do all the time.  Mozilla is the SAME as Firefox except that it also has MAIL included.

So I install BOTH FF and mozilla, and all the risky sites I use FF browser for, and all the "safer" sites I use mozilla for, since it also has mail, and I dont want to lose the mail.  You should try mozilla mail, it is 100x better and more secure than Outlook disaster.  

So with both browsers running, and you have say 5 windows open each, you only lose half of the windows on a crash from one browser.  Firefox doesnt crash mozilla and vice versa, so you dont lose everything this way.
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There is an extension that can auto reload sessions after a crash...I will post it when I get to work tomorrow...I am unsure of the name of it
kylebheyneConnect With a Mentor Commented:

here it is...saves sessions during a crash
fuze44Author Commented:
Thanks to all of you.  Your answers were very helpful.
b0lsc0ttIT ManagerCommented:
Your welcome.  Glad to help.  Thanks for the grade, the points and the fun question.

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