| Issue | Solution | |-------|----------| | “This app can’t run on your PC” | You downloaded a 32-bit version. Delete it and get the build. | | java -version shows older Java (e.g., 1.8) | Another Java installation is earlier in the PATH. Move %JAVA_HOME%\bin above C:\Program Files (x86)\Common Files\Oracle\Java\javapath in system PATH. | | MSI install fails with error 1603 | Run the installer as Administrator (right-click → Run as Administrator). | | Antivirus blocks the download | OpenJDK from Adoptium/Microsoft/Amazon is safe. Add an exception or temporarily disable real-time scanning. |

Amazon’s free, multi-platform distribution of OpenJDK. Comes with long-term support.

Need a different Java version? OpenJDK 17 (LTS) and OpenJDK 21 (LTS) are also excellent choices for Windows 10 64-bit. The same download steps apply — just change the version filter.

Because official OpenJDK builds do not feature a standard .exe installer, manual extraction and configuration are necessary. Step 1: Download and Extract Navigate to the JDK 11 Archive. Locate the build. Download the .zip file. Extract the folder to a permanent location. Example: C:\Program Files\Java\jdk-11\ 🛠️ Configuring Environment Variables