Lost bookmarks when synced 的最新解答https://support.mozilla.org/zh-TW/questions/12977302020-08-04T00:45:23-07:00If you use Sync then best is to disconnect Sync temporarily during troubleshooting.
This can be caus2020-08-04T00:45:23-07:00cor-elhttps://support.mozilla.org/zh-TW/questions/1297730#answer-1338828<p>If you use Sync then best is to disconnect Sync temporarily during troubleshooting.
</p><p>This can be caused by a problem with the <b>places.sqlite</b> and <b>favicons.sqlite</b> databases in the Firefox profile folder.
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<ul><li>use "Verify Integrity" button on the "Help -&gt; Troubleshooting Information" (about:support) page
</li></ul>
<p>If errors are reported with "Verify Integrity", close and restart Firefox and retry.
</p><p>If "Verify Integrity" cannot repair places.sqlite, rename/remove all <b>places.sqlite</b> and <b>favicons.sqlite</b> files in the Firefox profile folder.
Firefox will rebuild places.sqlite and restore the bookmarks from a recent JSON backup in the bookmarkbackups folder.
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<ul><li>keep a backup copy of places.sqlite in case a new places.sqlite database has to be created
</li></ul>
<p>See also:
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<ul><li><a href="https://support.mozilla.org/en-US/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file" rel="nofollow">https://support.mozilla.org/en-US/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file</a>
</li><li><a href="https://support.mozilla.org/en-US/kb/fix-bookmarks-and-history-will-not-be-functional" rel="nofollow">https://support.mozilla.org/en-US/kb/fix-bookmarks-and-history-will-not-be-functional</a>
</li></ul>
<p>You can use the button on the "Help -&gt; Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the <b>about:profiles</b> page.
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<ul><li>Help -&gt; Troubleshooting Information -&gt; Profile Folder/Directory:<br>Windows: Open Folder; Linux: Open Directory; Mac: Show in Finder
</li><li><a href="https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data" rel="nofollow">https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data</a>
</li></ul>