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Not Syncing my Old data to my newly installed Firefox

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I reset my Computer. After Reset I Signed in to my Firefox account but its not getting back all of my previous details which I already synced several times before with fresh firefox browser. But its not syncing this time.

I reset my Computer. After Reset I Signed in to my Firefox account but its not getting back all of my previous details which I already synced several times before with fresh firefox browser. But its not syncing this time.

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Moderators message regarding Firefox Sync - It appears from your question, that you are using Firefox Sync as a back up service. This is not what Sync is designed to do. The Firefox Sync service takes a copy of the data you wish to include and transfers it to a second device (typically a mobile device such as a tablet or a telephone) running a copy of Firefox. The storage in between all attached devices is both temporary and fragile and is not stable enough to be (and is not designed as) a reliable backup service.

If you have a copy of your Firefox profile for desktop Firefox, you may be able to recover your bookmarks and other data. Please have a read of this article -

Recover lost or missing Bookmarks https://support.mozilla.org/en-US/kb/recover-lost-or-missing-bookmarks

If you have a copy of your data on a mobile version of Firefox, please follow these instructions to connect it to Firefox Sync to copy your data -

How do I set up Sync on my computer? - Connect additional devices to Sync https://support.mozilla.org/en-US/kb/how-do-i-set-sync-my-computer#w_connect-additional-devices-to-sync