My bookmarks and history are gone 的最新解答https://support.mozilla.org/zh-TW/questions/13100392020-10-24T06:07:02-07:00Reboot the computer.
If you have sync, and there is a problem anywhere,
Shut Down Sync Immediately 2020-10-24T06:07:02-07:00fredmcd-hotmailhttps://support.mozilla.org/zh-TW/questions/1310039#answer-1360963<p>Reboot the computer.
</p><p><br>
If you have sync, and there is a problem anywhere,
<strong>Shut Down Sync Immediately On All Devices</strong> to
prevent the problem from spreading&#46; Once the
problem is fixed, perform the same repair on all
computers/profiles before using sync again&#46;
</p><p><br>
[v57+] Places Maintenance is built into Firefox&#46;
</p><p>Type <strong>about:support</strong>&lt;enter&gt; in the address bar&#46;
</p><p>You will find <strong>Places Database</strong> near the bottom&#46;
Press the <strong>Verify Integrity</strong> button&#46;
</p><p>When done, copy and post the results here&#46;
</p><p>https://support&#46;mozilla&#46;org/en-US/kb/fix-bookmarks-and-history-will-not-be-functional
</p>