This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Can I use two different versions of Firefox on the same computer?

  • 1 reply
  • 9 have this problem
  • 2 views
  • Last reply by cor-el

tazdev
tazdev
more options

I work part time for ChaCha which requires their toolbar addon to work. They have not updated that toolbar yet to be compatible with FF 4.0. I was wondering can I have two different installs of FF (3.6.16) that I use for ChaCha and 4.0 that I use for everything else until ChaCha updates their toolbar?

I work part time for ChaCha which requires their toolbar addon to work. They have not updated that toolbar yet to be compatible with FF 4.0. I was wondering can I have two different installs of FF (3.6.16) that I use for ChaCha and 4.0 that I use for everything else until ChaCha updates their toolbar?

All Replies (1)

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

You can do a custom install and install each version in its own program folder.

Create a new profile exclusively for each Firefox version and create a desktop shortcut with -P "profile" appended to the target to launch each Firefox version with its own profile.

See these mozillaZine KB articles for information: