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The Bookmarks and history system will not be functional because one of Firefox's files is in use by another application.

  • 10 replies
  • 1 has this problem
  • 15 views
  • Last reply by cor-el

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I have done the following to attempt to fix this:

Rebooted computer Uninstall/reinstall Firefox Uninstall/Reinstall Kaspersky Restore bookmarks (Says cannot update file) Uninstalled/reinstalled Adobe Flash Player Disc Cleanup Updated Windows Ran Malwarebytes/Kaspersky/Windows Defender Killed Firefox through Task Manager Created new places database Downgraded Firefox Deleted all extensions and add-ons, removed theme


Nothing I have done after searching has worked. I NEED these bookmarks in order to run my business. Please help me!

I have done the following to attempt to fix this: Rebooted computer Uninstall/reinstall Firefox Uninstall/Reinstall Kaspersky Restore bookmarks (Says cannot update file) Uninstalled/reinstalled Adobe Flash Player Disc Cleanup Updated Windows Ran Malwarebytes/Kaspersky/Windows Defender Killed Firefox through Task Manager Created new places database Downgraded Firefox Deleted all extensions and add-ons, removed theme Nothing I have done after searching has worked. I NEED these bookmarks in order to run my business. Please help me!

All Replies (10)

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You probably already did everything that's mentioned here :

https://support.mozilla.org/en-US/kb/fix-bookmarks-and-history-will-not-be-functional

When I read your question, I immediately thought : " The OP should get rid of Kaspersky ..... "

Would you please disable your Kaspersky software and see if that will make a difference  ?

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I have deleted Kaspersky, tried a number of the things listed above, still same issue.

I just disabled it, and reinstalled Firefox, and still the same issue.

This is extremely frustrating.

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Nope, nope and nope.

I had the bookmarks after deleting firefox, running ccleaner and reinstalling. The minute I closed FF, I lost all bookmarks.

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So where are you now on this ?

This owned by the same people that deleted your Bookmarks, ccleaner. https://www.ccleaner.com/recuva

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Did you try to remove all places.sqlite files including places.sqlite-shm and places.sqlite-wal with Firefox closed?


You can create a new profile to test if your current profile is causing the problem.

See "Creating a profile":

If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over problems.

Don't copy places.sqlite, but restore a compressed .jsonlz4 backup from the bookmarkbackups folder.

  • Bookmarks -> Show All Bookmarks -> Import & Backup -> Restore
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Yes, I tried the new profile, and that did not work either.

I still have no bookmarks.

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Well I finally went digging through Chome and all of my bookmarks and log-in info is in there. Guess I'll stick with it for now.

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Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen or hold down the Shift key) to see if that has effect.