Plesk 18.0.66 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Plesk 18.0.66 reached end of life on 4 Mar 2025. It no longer receives security fixes.
Support timeline
Official dates from the Plesk release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 10 Dec 2024 | — |
| End of life | 4 Mar 2025 | 1.4 years ago |
| Latest release | 18.0.66.2 · 9 Jan 2025 | final |
Where to go from 18.0.66
Recommended target: Plesk 18.0.80 (supported until 27 Oct 2026).
The newest actively supported branch is Plesk 18.0.80 (latest release 18.0.80.1).
Frequently asked questions
Is Plesk 18.0.66 still safe to use?
Plesk 18.0.66 reached end of life on 4 Mar 2025, 523 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Plesk 18.0.66?
Yes — the final release (18.0.66.2) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Plesk 18.0.66 to?
Upgrade to Plesk 18.0.80, the newest actively supported branch (supported until 27 Oct 2026).