One of the most common causes is OneDrive trying to sync your "My Games" folder while the game is running. Try shutting down OneDrive completely or excluding the Far Cry Primal directory from synchronization.
File system failure in Far Cry Primal can detract from the rich, immersive experience that the game aims to provide. Understanding the causes of such failures and knowing how to mitigate them can help players minimize disruptions and enjoy the game to its fullest. Moreover, game developers and publishers, like Ubisoft, play a crucial role in providing tools and support to address these technical challenges, enhancing the overall gaming experience.
If it still fails, disable cloud synchronization in the Ubisoft Connect settings and try starting a new save to see if the error persists. Advanced Troubleshooting
Delete the original contents and restart the game. If the cloud sync is active, it may restore a functional version of your save.
If the error occurs during loading, your save profile may be corrupted.