I press the yellow button that says launch unreal engine 4.21.2 then it goes on and gives me the error code LS-0019-IS-PQR23, How do I launch unreal engine and what does this error code mean?
Take a look at this answerhub article, not sure if it will work, but he appears to have figured it out. https://answers.unrealengine.com/questions/752719/helpls-0019-is-pqr23.html