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Lost Bookmarks after computer re-image
I had an extensive collection of bookmarks I used frequently and in the past was able to recover them through Firefox sync. My computer was recently re-imaged by my company and I had to reinstall Firefox. This time when I logged into sync the bookmarks did not re-appear. I cannot connect my device to my previous profile on this machine because it has been replaced, but when I look at enrolled devices it still identifies my previous profile on this machine as active. Is there a way to recover the bookmarks from this previous profile instance? Are these bookmarks still saved somewhere in the cloud?
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Thank you for your question about the Firefox Sync service.
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.
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.
You can install the About Sync extension in Firefox 72 and newer on desktop to check what data is stored on the Sync server via the about:sync page provided by this extension.
Close and restart Firefox to access the about:sync page added by this extension (see the about:about page for possible about pages).