Make sure you not running Firefox in (permanent) Private Browsing mode.

• https://support.mozilla.org/kb/Private+Browsing
• Tools > Options > Privacy > Firefox will: "Use custom settings for history"
• Deselect: [ ] "Always use private browsing mode"

If you not using Private Browsing Mode

• Tools > Options > Privacy > History>
• Firefox will: "Use custom settings for history":
• Select: [x] Accept Cookies from sites
  • Accept third party cookies: "From Visited"
• Keep until "They Expire"
• Deselect: [ ] "Clear history when Firefox closes"
• https://support.mozilla.org/kb/Clear+Recent+History

If you use cleanup software like CCleaner then check the settings for the Firefox application.

Thanks for you reply,

As you can see in my post, I have the options set to Custom and to Remember.

I can see cookies in the Show Cookies window, that's not a problem.

Even if I was using a cleanup software there's nothing there to cleanup except cookies!

I've included a couple of screenshots.

I'm not sure but I think I might have to change something in about:config even thought I haven't changed anything since I updated to FF 24

Looking forward to your response.

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

You were right, cor-el, the places.sqlite was corrupted.

I add the Places Maintenance add-on. But all it did was tell me the file was corrupted.

After shutting down Firefox, I deleted all of the places.sqlite files. I restarted Firefox and all is good. I still have my Bookmarks and only lost the most visited tabs info, which I believe will fill back in as I continue to browse with Firefox.

Thanks to both of you for your feedback.

You're welcome