How do I verify integrity of game files?

Microsoft Store

If you installed the game from the Microsoft Store, you'll only be able to completely uninstall and reinstall the game.  Be sure to back up your save files to another location.  Instructions for save file location can be found here.

Epic Game Store

1. Navigate to the game in your Library and click on the cog icon.
2. Once open, click Verify in the drop-down navigation.
3. After the verification, the launch option appears. Click Launch.