Hey Rob,

Can you elaborate on what do you mean by haven't worked? Do you mean Firefox is not saving any new bookmark and history?

Thanks for replying, Kiki. In fact, I've solved the problem. When Firefox updated, it had turned off the syncing for Bookmarks and History. Going thru Preferences > Sync > Manage syncing, I just had to tick the appropriate boxes again.

Oh, I'm glad you're able to resolve it on your own. I just marked your response as the solution to help others with the same issue.

I hope you have a safe and enjoyable browsing experience with Firefox! (: