Error code: 0301 CDEF001

Most likely your system has debug mode enabled. For security reasons, SmartGuard does not allow the game to run on computers with debug mode enabled.
Disabling this mode is quite simple by following the instructions below:

1. Press Win+R. In the dialog that opens, enter msconfig and click OK.

   

2. In the window that opens, go to the "Boot" tab and click on the "Advanced options..." button.
   Uncheck the "Debug" option.

   

3. Click OK to confirm your changes. Reboot your PC.