This happens if you accidentally installed a newer version of Java. Uninstall all current Java versions via the Control Panel and reinstall Java 8 Update 151. If you want to fine-tune your retro setup, let me know:
This is the biggest hurdle. Modern Minecraft bundles Java 17 or Java 21, which do not support Windows XP. You must manually install Java 8 (Update 151 or older) or Java 7 , which were the last versions to natively support Windows XP. 🛠️ Step-by-Step Installation Guide minecraft windows xp download
Avoid 64-bit Java unless you are running the rare Windows XP 64-Bit Edition. 2. Download the Legacy Minecraft Launcher This happens if you accidentally installed a newer