Please try starting the Firefox profile manager. [More Details]

Switch profiles if there are multiple profiles displayed.

Click on "Bookmarks" in your "Menu Bar".

Next click on "Show All Bookmarks"

The Library Dialog will open to you bookmarks. At the top of the dialog will be the option to "Import and Backup". Click "Import and Backup" scroll down to "Restore", when your hovers over "Restore" a list of backed up bookmarks should appear. If not, quite possibly Firefox has not been saving backups.

You can also manually save bookmark backups from the "Show All Bookmarks" portion of the Library by clicking "Import and Backup", and then "Backup..."

Also if you open another tab, you can type "about:config" in the address bar and press <ENTER>. This opens options not normally accessible. The first time it gives you a warning, you can disable the warning or leave it in place for the next the you open "about:config".

In the Search Bar type "bookmarks" and press <ENTER> . A list of attributes should narrow down to a few attributes about bookmarks. Look for "browser.bookmarks.max_backups" see what value is set... it should be set to "10". It sets the maximum number of automatic updates. To change it to a different value double click that attribute and increase/decrease just don't go overboard. Also you can delete older backups, just be careful. My bookmarks are listed with the newest ones first.

Problems with bookmarks and history not working properly can be caused by a corrupted places.sqlite database file.

You can check for problems with the places.sqlite database file in the Firefox profile folder.

• http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox
• https://support.mozilla.org/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file