FIFA 21, a highly anticipated soccer simulation game developed by EA Sports, was released in October 2020. The game is available on various platforms, including PC, via the Origin digital distribution platform. However, some users have encountered an issue where the game is not installed or recognized by Origin, often accompanied by a "crack" or pirated version warning. This paper aims to explore the causes of the "FIFA 21 Origin is not installed crack" issue and provide potential solutions for affected users.