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Possible Duplicate:
How to export everything from Firefox to another PC

How can I back-up entire Firefox 4 settings and then apply them after a clean re-install?

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marked as duplicate by Mehper C. Palavuzlar, Sathya Jun 4 '11 at 6:18

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

It doesn't specifically target firefox 4 and its sync features so i don't think it was a duplicate. – cpx Jun 2 '11 at 12:57
up vote 3 down vote accepted

You can setup a Firefox Sync account. It synchronises your

  2. Passwords
  3. Preferences
  4. History
  5. Tabs

And you can uninstall your Firefox, reinstall it and reconnect to synchronise and all your settings will be there.

To setup synchronisation go to the Orange Firefox button > Options> Options and the Sync tab.

Checkout the tutorial on Firefox Sync for further instructions.

Just remember to store your synchronisation key temporarily as it will be needed to restore your settings on a fresh install.

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I recommend Mozbackup

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