Hi.
I had the same problem and also had Windows Defender active. For me it only worked when I turned off the 'Real-time Protection'. However, then the PC must be restarted with the 'Real-time Protection' turned off. After restarting, it automatically becomes active again for me and I turn it off again directly without doing anything else. After that I can start the game normally.
The summary is:
1. Windows Security->Virus & Threat Protection->disabled 'Real-time Protection'.
2. restart the computer
3. windows security->virus & threat protection->disabled 'Real-time protection
4. start the game