FortiOS 6.4 End of Life
Support dates and upgrade guidance — rebuilt from live data.
FortiOS 6.4 reached end of life on 30 Sept 2024. It no longer receives security fixes.
Support timeline
Official dates from the FortiOS release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 31 Mar 2020 | — |
| End of life | 30 Sept 2024 | 1.9 years ago |
| Active support ended | 31 Mar 2023 | security fixes only after this |
| Latest release | — | final |
Where to go from 6.4
Recommended target: FortiOS 8.0 (supported until 21 Oct 2030).
The newest actively supported branch is FortiOS 8.0 (latest release ).
Frequently asked questions
Is FortiOS 6.4 still safe to use?
FortiOS 6.4 reached end of life on 30 Sept 2024, 678 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download FortiOS 6.4?
Yes — the final release (6.4) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade FortiOS 6.4 to?
Upgrade to FortiOS 8.0, the newest actively supported branch (supported until 21 Oct 2030).