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I update to the latest fastest Firefox quantum and did not care for it.

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Did a restore and lost all my book markers and folders. When I did the download I believe Firefox would of did a back up of all my book marker/folders. Where would the back up be ? Thanks

Did a restore and lost all my book markers and folders. When I did the download I believe Firefox would of did a back up of all my book marker/folders. Where would the back up be ? Thanks

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Hi, rolling back Firefox can now cause data loss so is not recommended. See Install an older version of Firefox.

You can first try restarting Firefox - 3-bar menu > Exit.

If that doesn't help, and in case a Refresh has occurred, please look on your Desktop for a file named Old Firefox Data - Refresh Firefox - reset add-ons and settings.

If the file isn't there, you can try this: Open bookmarks > Show All Bookmarks > Import and Backup > Restore, and see if you have a backup there.

If not, please see -

If your question is resolved by this or another answer, please take a minute to let us know. Thank you!