Serious Sam 3 Cannot Set Display Mode ●

If it loads successfully, go into the in-game video settings, set your correct native resolution, apply it, and then you can safely switch back to fullscreen. ⚙️ Fix 2: Manually Edit the Configuration File

Here is a complete, step-by-step troubleshooting guide to get your game up and running. 🛠️ Quick Fix: Force Windowed Mode serious sam 3 cannot set display mode

Find the game's .exe file (usually inside the Bin or Bin\x64 folder). Right-click the executable and select . Go to the Compatibility tab. Check Run this program as an administrator . Check Disable fullscreen optimizations . Click Apply and OK. If it loads successfully, go into the in-game

Windows display scaling sometimes blocks the game from accessing full-screen permissions. If it loads successfully