According to leaked internal notices shared online, Firefox is expected to terminate all China-region user accounts and close its China-based subsidiary, though Mozilla has yet to issue an official statement. The notice appeared briefly before being withdrawn.

Background: Firefox’s China Presence
Firefox has operated in mainland China through Beijing Mozilla Online Ltd., a subsidiary established in March 2005 to deliver localized services tailored to Chinese users.
Accounts created via the China-specific domain (www.firefox.com.cn) are separate and incompatible with international Firefox accounts—their data is stored completely independently.
Why This Shutdown Matters
Though Mozilla China provided localized infrastructure, Firefox has a tiny market share both globally and even smaller in China.
Continuing operations in China likely offered minimal strategic or financial benefit to Mozilla Foundation .
The Leak: Key Points from the Notice
The now-removed announcement reportedly stated that Beijing Mozilla Online would be closed and China-region Firefox accounts terminated.
The notice was briefly accessible via a link requiring special access, then suddenly pulled. The announcement is
Firefox will continue operating in China, but Beijing-based Mozilla China will be shut down and China-region Firefox accounts will be terminated. Click here to view the full notice.
However, Mozilla staff began addressing the situation on Chinese-language forums, outlining how to back up and restore account data, and summarizing issues with older versions.
What Users Should Do To Be Prepared
- Backup Your Firefox Data
- Export bookmarks and passwords.
- Manually back up your entire profile directory.
- Uninstall the China Version
- If you originally installed Firefox from www.firefox.com.cn, it’s recommended to uninstall it completely after backing up.
- Install the International Version
- Download Firefox from the global site (www.mozilla.org).
- Create a new international Firefox account to sync your data.
- Restore or Re-Import Your Data
- Use your backed-up profile or exported files to restore bookmarks, history, and passwords in the new installation.
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