11 - Xcom: Enemy Unknown Not Launching Windows

If a file has been corrupted or a Windows update altered a permission, Steam can repair it automatically.

: Manually run the installers found in the game’s _CommonRedist folder within your Steam installation directory. Reset Configuration Files xcom: enemy unknown not launching windows 11

Windows Defender in Windows 11 is aggressive. It can sometimes block the game's anti-tamper software or executable from running, mistaking it for a threat. If a file has been corrupted or a

. Reddit +11 Community Experiences Users on forums have shared varying success with these manual tweaks: “Change to Borderless Window in config files. Go to XCom-Enemy-Unknown\Engine\Config to the BaseEngine file, search 'window' and change Fullscreen to FALSE, and Borderless Window to TRUE.” Reddit · r/Xcom It can sometimes block the game's anti-tamper software

If you have tried all these steps and the game still will not launch, please check the Windows Event Viewer (type "Event Viewer" in Start) under "Windows Logs" > "Application" to see the specific error code generated by the crash.

Check the box for and click Apply . Force Borderless Windowed Mode :

If the game launches but you see a black screen, or if it crashes upon entering a mission, you may need to manually adjust the graphics settings outside of the game.