The background service that manages the key may have crashed.

| Pros | Cons | |------|------| | ✅ Gold-standard automotive data | ❌ Requires disabling core Windows security features | | ✅ Offline-capable after setup | ❌ Breaks after every Windows feature update | | ✅ One-time purchase (no monthly fee) | ❌ No official Windows 10 driver from AutoData | | | ❌ Poor error messaging – just “key not found” | | | ❌ USB 3.0 ports often incompatible |

: Some versions require manual decryption. Look for an INSTALLKEY.BAT file in the exe64/Tools folder of your installation and run it as an Administrator.