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History of the synchronized devices - Firefox Sync

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Hello everyone,

I had Firefox Sync. on an old computer and I removed this computer from the devices synchronized around early September 2018. Is there a way to know the exact date when I've removed this synchronization ? It would help me a lot to know that.

Also, is there a way to know from which device bookmarks/history/preferences have been added/modified. I'd like to show that all the bookmarks I've added to my account have been added from my current device.

Thanks a lot for your precious help, Best regards, Quentin

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Hello It would be really helpful in my situation to access the Sync. change logs.

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Note that data from that long ago may not anymore be present on the Sync server if that is what you hope for.

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).

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Great, thanks a lot for this extension.

I can see some categories (like "addons", "bookmarks" etc) and data there. In the "clients" category, there is only the current device linked to my account. Do you know if there is a category for the past synchronised devices ? I'd like to prove that there was a synchronisation in the past with an other computer.

Thanks a lot for your time and help. Best regards, Quentin

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