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Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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Backup, recovery, and sync

Backup, recovery, and sync

Sync your data across different platforms and devices, backup what’s important, and recover it if it’s lost.

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Reset your Mozilla account password with Recovery Keys

Use Troubleshoot Mode in Firefox

Export Firefox bookmarks to an HTML file to back up or transfer bookmarks

Restore bookmarks from backup or move them to another computer

Restore your Firefox browsing data with a backup file

Switch from Chrome to Firefox

Export login data from Firefox

Restore bookmarks, passwords and data from an old Firefox profile

Recover user data missing after Firefox update or reinstall

About your important data and their files

I've lost my Firefox Sync account information - What to do

Manually back up and restore Firefox profile data

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