Cause: The application is hard-coded to look for the 32-bit JRE.
Fix: Uninstall all 64-bit Java versions temporarily, install the 32-bit version, then reinstall the 64-bit version. The 32-bit installer will register itself correctly in the WOW6432Node registry hive.
I have to say it: Running 32-bit Java usually means running Java 8 (End of Public Updates for free users). 32bit java install
| Problem | Likely Fix |
| :--- | :--- |
| "This app can't run on your PC" | You downloaded 64-bit by mistake. Get the i586 (32-bit) version. |
| App still sees 64-bit Java | Uninstall 64-bit Java temporarily, or use the launcher script above. |
| No 32-bit Java for macOS Catalina+ | Impossible. Run a Windows 32-bit VM (VirtualBox) or use an older Mac on Mojave (10.14). |
| "Java not recognized" after install | Reboot. Or manually add C:\Program Files (x86)\Java\jre1.8.0_xxx\bin to your System PATH variable. | Cause: The application is hard-coded to look for
Oracle still hosts Java 8 32-bit, but they hide it well. Alternative (Easier): Use Eclipse Temurin (Adoptium)
Alternative (Easier): Use Eclipse Temurin (Adoptium). They build modern 32-bit Java versions (up to version 17 or 21).