It might be the bookmarks/history file places.sqlite was corrupt.

Look on your desktop. Do you see a folder called; Old Firefox?

https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible

No, I don't see any folders by that name. My Profile seems to be okay, everything else is prefectly fine. My history is empty and my bookmarks are missing. I've attached a photo of how it looks like.

The photo is of Google

Type about:support<enter> in the address bar.

Under the page logo on the left side, you will see Application Basics. Under this find Profile Folder. To its right press the button Show Folder. This will open your file browser to the current Firefox profile. Now Close Firefox.

Locate the places.sqlite file. Then rename or delete it. Restart Firefox. ++++++++++++++++++++++++++++++++++++++++++ Restore Bookmark Backups

Firefox automatically makes backups of the bookmarks. These are stored in the bookmarkbackups folder.

Open the Bookmarks Manager; Press the Alt or F10 key to bring up the toolbar, and select Bookmarks. Hot key is <Control> (Mac=<Command>) <Shift> B.

Once the window is open, at the top of the page, press the button labeled Import and Backup. Select Restore. From the list, pick the file you want and click it.

The backups are stored in a jsonlz4 file named something like this; bookmarks-2016-06-29_1424_enD1GTH ya0JmicnYWg4V4g==.jsonlz4

In this example; 2016-06-29 = date created, 1424 = number of entries.

Hi Kosinsky, I'm sorry to hear about this problem. I think I'm just repeated what FredMcD just posted, but in case it's easier to follow with more words, maybe this will help.

Bookmarks Toolbar Blank

Having no bookmarks on the bar can be a toolbar layout issue. Just to rule that out, try the "Restore Defaults" button at the bottom of the Customize screen: Customize Firefox controls, buttons and toolbars.

Can't Restore Bookmark Backup

Some users have not been able to restore bookmark backups for reasons that are difficult to diagnose. There generally are two possibilities:

(1) Database problem

Firefox stores bookmarks and history in a database file named places.sqlite in your Firefox profile folder.

If you have gotten the notification described in the following article, or have these symptoms, this article has the steps to remove your existing places.sqlite file and have Firefox generate a new one: Fix "The bookmarks and history system will not be functional" error message.

At the next startup, Firefox should use one of its bookmark backups to automatically restore bookmarks to the new database. If that doesn't work, see #2.

(2) Corrupted backup file

Bookmark backups are compressed, so decoding and fixing unrestorable files requires a couple extra steps.

[A] Access your bookmarkbackups folder as follows:

Open your current Firefox settings (AKA Firefox profile) folder using either

• "3-bar" menu button > "?" Help > Troubleshooting Information
• (menu bar) Help > Troubleshooting Information
• type or paste about:support in the address bar and press Enter

In the first table on the page, on the Profile Folder row, click the "Open Folder" button. This should launch a new window listing various files and folders in Windows Explorer.

Double-click into the bookmarkbackups folder. Resize this window so you can see the Troubleshooting Information page and switch over to Firefox. We'll be back momentarily.

[B] Open this tool on my website in a Firefox (or Chrome) tab:

https://www.jeffersonscher.com/ffu/bookbackreader.html

[C] Drag and drop a backup file (you can judge from the dates in the file names which one is most recent) onto the white box on the page.

Then you can try "cleaning" the existing file or convert it to HTML format. Depending on which one you try this article would have the next step:

• Restore a JSON format backup file: Restore bookmarks from backup or move them to another computer (use "Choose file..." from the bottom of the Restore menu to point Firefox to the converted file)
• Import an HTML-format bookmark file: Import Bookmarks from an HTML file