I’ve had issues with unreal and windows because if you update windows periodically using the windows update feature in time some of the files unreal needs will not be installed.
ok this is a bad way to say this i will break this down.
you update every time windows tell you that you need to update.
all fine, windows works, unreal will maybe not work.
you use the offline windows updates exe. that one includes all the directx files that unreal needs