Open the microwave door.
Pry off the plastic interior ring of the inside of the microwave door. To remove, insert a flat object, such as a small flat-head screwdriver or butter knife, between the ring and inner door panel. Be very careful when prying to ensure that the interior ring does not crack.
Remove the two mounting screws securing the microwave door handle to the door. Remove the handle.
Align the new door handle with the screw holes and then secure the handle in place with the mounting screws.
Press the plastic interior ring back into position.