Các câu trả lời gần đây cho When I try to sign into my sync account it says that there is not such user.https://support.mozilla.org/vi/questions/9987242014-05-04T08:18:50-07:00Firefox 29 introduced a new sync mechanism. This new system has only been around for about 2 months,2014-05-04T08:18:50-07:00mythmonhttps://support.mozilla.org/vi/questions/998724#answer-568660<p>Firefox 29 introduced a new sync mechanism. This new system has only been around for about 2 months, so it is likely that you actually don't have an account. You can see help information for the new Sync here: <a href="/en-US/kb/sync-your-firefox-bookmarks-history-passwords-and-" rel="nofollow">Sync your Firefox bookmarks, history, passwords and more</a>.
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