If you have tried every solution in this 1,500-word guide and the error persists, the issue lies with your Windows user profile. Create a new Windows Administrator user account, log into it, install Steam, and try RE4. You will likely find it works perfectly, confirming your original Windows profile is corrupted.
Many users encounter this error when trying to use a desktop shortcut or the .exe file in the game folder.
How to Fix “Steam Must Be Running to Play This Game” (2026 Quick Fix)
This error is not exclusive to Resident Evil 4 , but it appears with surprising frequency for Capcom’s masterpiece due to its DRM structure, anti-tamper software, and how the game interfaces with Steam’s background processes.