Firefox 103 End of Life

Support dates and upgrade guidance — rebuilt from live data.

End of Life

Firefox 103 reached end of life on 23 Aug 2022. It no longer receives security fixes.

1,504 days without security patches

Recommended action: upgrade to Firefox 157.

Check your versionfirefox --version

Support timeline

Official dates from the Firefox release process.

Milestone	Date	Status
Initial release	26 Jul 2022	4y 2mo ago
Security Support ended	23 Aug 2022	4y 1mo ago
Latest release	103.0.2 · 9 Aug 2022	final

Where to go from 103

Recommended target: Firefox 157.

The newest actively supported branch is Firefox 157 (latest release 157.0).

Frequently asked questions

Is Firefox 103 still safe to use?

Firefox 103 reached end of life on 23 Aug 2022, 1,504 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.

Can I still download Firefox 103?

Yes — the final release (103.0.2) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.

What should I upgrade Firefox 103 to?

Upgrade to Firefox 157, the newest actively supported branch.

Firefox 103 End of Life

Support timeline

Where to go from 103

Frequently asked questions

All Firefox versions