| Common Attempt | Result | Why It Fails |
|----------------|--------|---------------|
| Run LAW.exe repeatedly | ❌ Fails | LAW sees the existing corrupt lservrc and refuses to overwrite it. |
| Reinstall SPSS without uninstalling | ❌ Fails | Installer preserves lservrc to keep your license. |
| Disable UAC | ❌ Fails | Subcode 18 is a hash error, not a permission error (though permissions matter). |
| Deleting lservrc + Registry key + Reboot | ✅ Works | Forces SPSS to generate a brand-new, clean license hash. |
Follow these steps in order. Do not skip any, even if you think you have already tried them. | Common Attempt | Result | Why It
Before you launch SPSS again, verify: