Right-click Call of Duty: World at War and choose . In the General tab, find the Steam Cloud toggle. Switch the toggle to Off .
This is the quickest way to test if this is your issue: call of duty world at war filesyscheck.cfg error
If CoD: WaW is installed in C:\Program Files (x86) , Windows restricts write/modify access to config files. The game may try to generate the file but fail due to lack of admin rights. Right-click Call of Duty: World at War and choose