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Firefox on Windows XP is not syncing with Firefox on my Windows 7 PCs
My Firefox bookmarks are all synced properly on each of my Windows 7 PCs and also on my several Android devices. However, even after resetting the sync info on my Windows XP PC, I am not seeing the bookmarks that are on all of my other devices.
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Firefox Sync, originally branded Mozilla Weave,[2] is a browser synchronization feature that allows users to partially synchronize bookmarks, browsing history, preferences, passwords, filled forms, add-ons, and the last 25 opened tabs across multiple computers.[3]
It keeps user data on Mozilla servers, but the data is encrypted in such a way that no third party, not even Mozilla, can access user information.[4] It is also possible for the user to host their own Firefox Sync servers, or indeed, for any entity to do so.[5]
Firefox Sync was originally an add-on[6] for Mozilla Firefox 3.x and SeaMonkey 2.0, but it has been a built-in feature since Firefox 4.0[7] and SeaMonkey 2.1.