Microsoft Build of OpenJDK

The Microsoft Build of OpenJDK is a free, long‑term supported distribution of the OpenJDK runtime. It is provided as a no‑cost binary for macOS, Linux, and Windows, and is built to be compatible with the standard OpenJDK specifications. The distribution is maintained by Microsoft, which contributes upstream patches and collaborates with the Eclipse Adoptium Working Group to ensure quality testing and vendor‑neutral availability.

Target users include developers and organizations that require a stable Java runtime for production workloads on any of the major desktop and server platforms. Because it is an OpenJDK‑compatible release, it can be used as a drop‑in replacement for other JDKs in existing Java applications, tooling, and build pipelines.

What distinguishes this distribution is Microsoft’s direct involvement in upstream development, including contributions such as the Windows on Arm port and macOS M1 support. The partnership with Eclipse Adoptium provides a vetted, business‑ready binary that benefits from the AQAVit quality suite, while Microsoft’s commitment to upstreaming accepted patches helps keep the distribution aligned with the broader Java ecosystem.