Palo Alto Networks PAN-OS 4.0 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Palo Alto Networks PAN-OS 4.0 reached end of life on 31 Dec 2014. It no longer receives security fixes.
Support timeline
Official dates from the Palo Alto Networks PAN-OS release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 22 Feb 2011 | — |
| End of life | 31 Dec 2014 | 11.6 years ago |
| Latest release | final |
Where to go from 4.0
Recommended target: Palo Alto Networks PAN-OS 12.2 (supported until 30 Jul 2029).
The newest actively supported branch is Palo Alto Networks PAN-OS 12.2 (latest release 12.2.2).
Frequently asked questions
Is Palo Alto Networks PAN-OS 4.0 still safe to use?
Palo Alto Networks PAN-OS 4.0 reached end of life on 31 Dec 2014, 4,239 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Palo Alto Networks PAN-OS 4.0?
Yes — the final release () generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Palo Alto Networks PAN-OS 4.0 to?
Upgrade to Palo Alto Networks PAN-OS 12.2, the newest actively supported branch (supported until 30 Jul 2029).