Is it possible to open cockpit door and Windows

Im affraid not thsese we not modelled as far as i'm aware

I thought you was talking about the main entry door that the captain would use to board the plane. But your actually talking about the cockpit door so i guess no. But then again I never tried to open it. :)

No, the cockpit door is not modeled. The reason cited, whether or not you or anyone else agrees, is related to security.