[v57+] Places Maintenance is built into Firefox.

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

You will find Places Database near the bottom. Press the Verify Integrity button.

When done, copy and post the results here.

Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

Hi Berliz, please try the "Verify Integrity" test mentioned in the first reply. However, first please shut down and restart Windows to release file locks and complete any pending updates, just in case.

Also, if you've seen the error message mentioned in the following article title, you may need to try the steps listed there:

Fix "The bookmarks and history system will not be functional" error message

> Task: checkIntegrity + The places.sqlite database is sane + The favicons.sqlite database is sane > Task: invalidateCaches - Unable to invalidate caches > Task: checkCoherence - The task queue was cleared by an error in another task. > Task: expire - The task queue was cleared by an error in another task. > Task: originFrecencyStats - The task queue was cleared by an error in another task. > Task: vacuum - The task queue was cleared by an error in another task. > Task: stats - The task queue was cleared by an error in another task.

Hi Everyone Please find results of integrity test as mentioned by Fred McD, I have tried virtually everything but this, does it help you ? Cheers

Have you tried Firefox in Safe Mode?

This part looks good:

> Task: checkIntegrity + The places.sqlite database is sane + The favicons.sqlite database is sane

Then it goes off the rails:

> Task: invalidateCaches - Unable to invalidate caches

If you try again in Firefox's Safe Mode, does the process run into problems at the same point?

If "Verify Integrity" button on the "Help -> Troubleshooting Information" (about:support) page cannot repair places.sqlite then remove all places.sqlite files in the Firefox profile folder. Firefox will rebuild places.sqlite and restore the bookmarks from a recent JSON backup in the bookmarkbackups folder.

• keep a backup copy of places.sqlite in case a new places.sqlite database has to be created
• http://kb.mozillazine.org/Unable_to_process_the_backup_file_-_Firefox
• https://support.mozilla.org/en-US/kb/fix-bookmarks-and-history-will-not-be-functional

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.

• Help -> Troubleshooting Information -> Profile Directory:
  Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder
• http://kb.mozillazine.org/Profile_folder_-_Firefox