To fix the issue, you can run the game in compatibility mode. Sometimes, Windows updates are responsible for Total War Warhammer launcher crashing.
You can right-click the Steam icon on the desktop and select Run as administrator. This operation can break the limited access to files and folder on Windows PC. Restarting the computer will close all the running programs and apps that may be conflicting with Total War Warhammer 2, such as the overlay app.
It should be a universal solution for many crashing issues. So, make sure that your OS, memory, and disk space meet the minimum requirements. Warhammer 2 crashing can occur when your PC fails to meet the basic system requirements. After investigating lots of user reports on forums and communities, we summarize the preliminary solutions below that have helped users fix the crashing issue. Prior to moving on to the following solutions, you can try some simple fixes to troubleshoot the Total War Warhammer 2 crashing issue first.