Your antivirus software might mistakenly block the game's executable file.

Go to the (or Local Files) tab and click "Verify integrity of game files..." . 5. Antivirus Exceptions

: Remove any folders created by mod managers like Fluffy Manager 5000 or individual mod folders to ensure a clean launch. 3. Graphics and Driver Maintenance

: In the Compatibility tab, check the box for "Run this program as an administrator" . Some users also find success by enabling compatibility mode for Windows 8 and checking "Disable fullscreen optimizations" .

Are you getting a specific when it crashes, or does it just close to the desktop?