If the manual activation window fails to appear, ensure you are running TestDrive2.exe
Q: What is a manual activation unlock code for Test Drive Unlimited 2? A: A manual activation unlock code is a special code that allows players to activate the game manually, bypassing the automatic activation process. Test Drive Unlimited 2 Manual Activation Unlock Code
Note: This works on some builds (v1.2) but fails on others if the DRM checks a checksum. Method 1 is safer. If the manual activation window fails to appear,
100% effective, adds support for modern resolutions (4K/Ultrawide), and includes bug fixes. Cons: Requires a clean install (mods may need reinstallation). adds support for modern resolutions (4K/Ultrawide)