This article explains why these text files do not work, the security risks of downloading them, and how you can actually play the game legally and safely today. The Problem with License Key Text Files

Keygens themselves are often harbingers of malware threats. Antivirus companies such as Norton, Kaspersky, AVG, and McAfee automatically quarantine keygens as potentially harmful software because cybercriminals increasingly camouflage harmful programs within them.

file to save it for the final activation step on their primary machine. Retail vs. Digital Physical/Retail