| Issue | Explanation | |-------|-------------| | | Original online DRM linked keys to an account. If that key was ever used online, it may be locked. | | Keygen Blacklist | The game’s installer contains a blacklist of commonly generated “cracked” keys. | | SafeDisc DRM Conflict | Retail EE3 uses SafeDisc 4.60 copy protection. Windows 10/11 have blocked SafeDisc drivers for security reasons, causing installation failure even with a valid key. | | Case-Sensitive Typing | The key must be entered exactly as printed, including hyphens. |
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