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
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
