Amazon offers an open jdk for Windows (and other OS), but just for Java 8, 11 and 16. You can download it from here: https://aws.amazon.com/es/corretto/

After installing it and running the java -version command, you will see something like this:

>java -version
openjdk version "1.8.0_242"
OpenJDK Runtime Environment Corretto-8.242.08.1 (build 1.8.0_242-b08)
OpenJDK 64-Bit Server VM Corretto-8.242.08.1 (build 25.242-b08, mixed mode)
Answer from Manuel Domínguez on Stack Overflow
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OpenLogic
openlogic.com › openjdk-downloads
OpenJDK Downloads | OpenLogic
Free, quarterly builds of OpenJDK for Linux, Windows, and MacOS.
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Microsoft Learn
learn.microsoft.com › en-us › java › openjdk › download
Download the Microsoft Build of OpenJDK | Microsoft Learn
Supported installation methods ... .sig files. If you still require Java 8, you can download any of the Eclipse Temurin builds of OpenJDK 8 from the Eclipse Adoptium project....
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OpenJDK
openjdk.org › install
OpenJDK: Download and install
Oracle's OpenJDK JDK binaries for Windows, macOS, and Linux are available on release-specific pages of jdk.java.net as .tar.gz or .zip archives. As an example, the archives for JDK 13 may be found on jdk.java.net/13 and may be extracted on the command line using ... The openjdk-8-jre package contains just the Java Runtime Environment.
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Bell Software
bell-sw.com › pages › downloads
Java Download | Java 8, Java 11, Java 17, Java 21, Java 25 - OpenJDK Builds for Linux, Windows & macOS
Download Liberica JDK, supported OpenJDK builds. Open source Java 8, 11 and more for Linux, Windows, macOS.
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Red Hat
developers.redhat.com › products › openjdk › download
Download the Red Hat Build of OpenJDK | Red Hat Developer
March 31, 2025 - jdk-10.0.2 Sources · OpenJDK Source Code · Release date August 07, 2018 · Download (260.83 MB) April 2018 · jdk-8u171-x64 ZIP · OpenJDK 8 Windows 64­-bit · Release date May 04, 2018 · Download (101.26 MB) jdk-8u171-x64 MSI · Supplemental (no support) Release date May 04, 2018 ·
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Red Hat
docs.redhat.com › en › documentation › red_hat_build_of_openjdk › 8 › html-single › installing_and_using_red_hat_build_of_openjdk_8_for_windows › index
Installing and using Red Hat build of OpenJDK 8 for Windows | Red Hat build of OpenJDK | 8 | Red Hat Documentation
This procedure describe how to manually install Red Hat build of OpenJDK 8 for Microsoft Windows using the archive. ... Download the archive of Red Hat build of OpenJDK 8 for Microsoft Windows.
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Techoral
techoral.com › blog › java › openjdk-install-windows.html
How to Download and Install OpenJDK 8 on Windows - 2025
March 22, 2025 - Here is the step by step procedure to install the latest AdoptOpenJDK on Windows 10 / Windows 8 / Windows 7. Go to AdoptOpenJDK Download page.https://adoptopenjdk.net/installation.html#installers
Find elsewhere
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OpenJDK
openjdk.org › projects › jdk8u
OpenJDK: JDK 8 Updates
The goal of this Project is to develop updates to JDK 8 · This Project is sponsored by the Build Group
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OpenJDK
openjdk.org › projects › jdk8
JDK 8
Development of JDK 8 Update Releases is being done in the nearby JDK 8 Updates Project.
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Azul Systems
azul.com › home › azul downloads
Java 8, 11, 17, 21, 25 Download for Linux, Windows and macOS
January 30, 2023 - Click here to download the Azul Zulu Builds of OpenJDK for Java 8, 11, 17, 21, 25 for Linux, Windows and macOS. Also download Azul Platform Prime.
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Adoptium
adoptopenjdk.net › releases.html
Latest release | AdoptOpenJDK - Open source, prebuilt OpenJDK binaries
AdoptOpenJDK provides prebuilt OpenJDK binaries from a fully open source set of build scripts and infrastructure. Supported platforms include Linux, macOS, Windows, ARM, Solaris, and AIX.
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OpenJDK
openjdk.org
OpenJDK
Learn about the key active Projects in the Community including Amber (high-productivity language features), Loom (lightweight concurrency), Panama (foreign functions and foreign data), Valhalla (primitive types and specialized generics), and, of course, the next version of Java and the JDK ...
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Cobiss
cobiss.net › doc › Namescanje_OpenJDK_8–x64_windows_EN.pdf pdf
Installing OpenJDK 8 for Windows x64
Architecture x64, Package Type JDK and Version 8, as shown in Figure 1. ... Select *.msi, which currently represents the newest version, and download it to your computer. At · the time of writing these instructions, version jdk8u302-b08.1 was available. Check if you ... OpenJDK8U-jdk_x64_windows_hotspot_8u322b06.msi.
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OpenJDK
wiki.openjdk.org › display › jdk8u › Main
Main - JDK 8u - OpenJDK Wiki
Friday, January 2nd 2026: Fourth and final jdk8u build promotion (tag: jdk8u482-b09). Frozen for release. Tuesday, January 20th 2026: GA; OpenJDK 8u482 released (tag: jdk8u482-ga, likely to be jdk8u482-b10)
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Reddit
reddit.com › r/java › openjdk for windows
r/java on Reddit: OpenJDK for windows
June 25, 2018 -

I'm having some difficulty in finding/installing OpenJDK on Windows 10.

I'm looking to install OpenJDK 1.8.0_121-b13 64-Bit specifically (to match what is running in our CI)

I (falsely) assumed it was as simple as find the installer & run that (like the oracle stuff) but I'm struggling to even find a windows installer.

Looking for someone to point me in the right direction..

EDIT: I found a way. I went here, clicked on commits here and started walking back through the commits until I found commit 3c1d6aa @ Jan 31, 2017). I then had a look at the diffs and spotted a lovely path to a zip file here. Downloaded/unzipped/ modified JAVA_HOME and it worked. :)

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Code
ggi.code.blog › how-to-download-install-java-jdk-8-in-windows-10-64-bit
How to Download & Install Java JDK 8 in Windows 10 (64-bit) – GGI Coding Verse {Old}
November 20, 2022 - Following are the steps on how to install Java in Windows 10 for JDK 8 free download for 32 bit or JDK8 download for Windows 64 bit and installation
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Adoptium
adoptium.net › temurin › releases
Latest Releases | Adoptium
All VersionsJDK 25 - LTSJDK 21 - LTSJDK 17 - LTSJDK 11 - LTSJDK 8 - LTS · No releases match your current filter criteria. Try adjusting your selections or reset all filters to see available releases. There are multiple different ways to get Eclipse Temurin beyond direct downloads. The curated list below shows some of these options for installing high-performance, cross-platform, open-source OpenJDK runtime binaries.
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Adoptium
adoptium.net
Home | Adoptium
Prebuilt OpenJDK Binaries for Free!
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Oracle
oracle.com › java › technical details
Java SE 8 Archive Downloads (JDK 8u211 and later)
Oracle also provides the latest OpenJDK release under the open source GPL License at jdk.java.net.