Proxmox Backup Server 3 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Proxmox Backup Server 3 reached end of life on 31 Aug 2026. It no longer receives security fixes.
Support timeline
Official dates from the Proxmox Backup Server release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 28 Jun 2023 | 3y 3mo ago |
| Security Support ended | 31 Aug 2026 | 1mo ago |
| Latest release | 3.4 · 10 Apr 2025 | final |
Where to go from 3
Recommended target: Proxmox Backup Server 4.
The newest actively supported branch is Proxmox Backup Server 4 (latest release 4.2).
Frequently asked questions
Is Proxmox Backup Server 3 still safe to use?
Proxmox Backup Server 3 reached end of life on 31 Aug 2026, 35 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Proxmox Backup Server 3?
Yes — the final release (3.4) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Proxmox Backup Server 3 to?
Upgrade to Proxmox Backup Server 4, the newest actively supported branch.