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lost bookmarks and history
Recently did the automatic upgrade of FireFox for Windows on one of my computers that was not logged in (sync) with FireFox. Upon completion all of my bookmarks and history were gone. An upgrade should not have done that.
Thought someone would want to know.
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This can happen if there is a problem with accessing the places.sqlite file in the Firefox profile folder. It is possible that security software is keeping a lock on this file.
Did you try to reboot the computer in case that unlocks the file ?
If you use Sync then best is to disconnect Sync temporarily during troubleshooting.
This can be caused by a problem with the places.sqlite and favicons.sqlite databases in the Firefox profile folder.
- use "Verify Integrity" button on the "Help -> Troubleshooting Information" (about:support) page
If errors are reported with "Verify Integrity", close and restart Firefox and retry.
If "Verify Integrity" cannot repair places.sqlite, rename/remove all places.sqlite and favicons.sqlite files in the Firefox profile folder.
Firefox will rebuild places.sqlite and restore the bookmarks from a recent JSON backup in the bookmarkbackups folder.
- keep a backup copy of places.sqlite in case a new places.sqlite database has to be created
You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.
- Help -> Troubleshooting Information -> Profile Folder/Directory:
Windows: Open Folder; Linux: Open Directory; Mac: Show in Finder