Microsoft Build of OpenJDK 21 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Microsoft Build of OpenJDK 21 is actively supported. It reaches end of life on 30 Sept 2028.
Support timeline
Official dates from the Microsoft Build of OpenJDK release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 19 Sept 2023 | 3y 1mo ago |
| Security Support ends | 30 Sept 2028 | in 2y |
| Latest release | 21.0.12.1 · 7 Aug 2026 | current |
How much runway a newer branch buys
Moving to Microsoft Build of OpenJDK 25 extends security support by about 730 days.
| Branch | End of life | Days left | vs 21 |
|---|---|---|---|
| Microsoft Build of OpenJDK 25 | 30 Sept 2030 | 1,456 | +730 days |
| Microsoft Build of OpenJDK 21 | 30 Sept 2028 | 726 | this branch |
| Microsoft Build of OpenJDK 17 | 30 Sept 2027 | 360 | -366 days |
| Microsoft Build of OpenJDK 11 | 30 Sept 2027 | 360 | -366 days |
Frequently asked questions
When does Microsoft Build of OpenJDK 21 reach end of life?
Microsoft Build of OpenJDK 21 reaches end of life on 30 Sept 2028 — 726 days from now. After that date it receives no security fixes.
Is Microsoft Build of OpenJDK 21 still supported?
Yes. Microsoft Build of OpenJDK 21 is currently maintained. Latest release: 21.0.12.1, published 7 Aug 2026.
What happens when Microsoft Build of OpenJDK 21 reaches end of life?
Security fixes stop. After 30 Sept 2028 this branch receives no further updates under standard support.
How long do I have to upgrade from Microsoft Build of OpenJDK 21?
726 days. Moving to Microsoft Build of OpenJDK 25 instead buys roughly 730 more days of security support.