Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

My bookmarks and history are gone

  • 1 nzaghachinzaghachi
  • 1 nwere nsogbu anwere nsogbu a
  • 1 view
  • Nzaghachi ikpeazụ nke FredMcD

more options

My bookmarks and history are gone. There is a red banner across the top, which reads, "The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem." No matter what I do, I can't seem to get either fixed.

My bookmarks and history are gone. There is a red banner across the top, which reads, "The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem." No matter what I do, I can't seem to get either fixed.
Nseta ihuenyo ndị agbakwunyere

All Replies (1)

more options

Reboot the computer.


If you have sync, and there is a problem anywhere, Shut Down Sync Immediately On All Devices to prevent the problem from spreading. Once the problem is fixed, perform the same repair on all computers/profiles before using sync again.


[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.

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