Damaged places.sqlite Your Firefox bookmarks and browsing history are stored in the Places database file, "places.sqlite". If there is a problem with this file, it can affect a number of functions related to bookmarks and history, including the "Import and Backup" features of the Bookmarks Manager. If you have a recent profile backup you can try replacing the original "places.sqlite" with the backup copy. If you have no backup or if it doesn't resolve the issue, you can force Firefox to create a new copy of places.sqlite and rebuild the Places database as follows: (You may wish to export your bookmarks to an HTML file first, as a precaution.) 1. Close Firefox completely 2. Open the Firefox profile folder 3. Remove or rename all files named "places.sqlite", including "places.sqlite.corrupt" files and "places.sqlite-journal", if found. Note: In case there is a problem with the JSON bookmark backups, you may also wish to remove all "bookmarks-(date).json" files from the bookmarkbackups folder and optionally place a recent copy or export of bookmarks.html in the Firefox profile folder. (This will result in missing bookmarks if the Firefox profile folder does not contain a "bookmarks.html" file with current bookmarks.) When you next start Firefox, "places.sqlite" will be rebuilt; however, you will lose your browsing history of recently visited pages. Your bookmarks will be automatically restored from the latest JSON bookmark backup or, if no JSON backup file is found, Firefox will automatically import the bookmarks from the profile folder bookmarks.html file, if it exists. C:\Users\<Current User>\AppData\Roaming\Mozilla\Firefox\Profiles\spjcguaa.default
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