Dave’s answer is a good one and it helped me quite a bit. Key points from my experience: 1) use a thin piece of carboard to slide in the right side of the door and lift up the hooks holding the door closed. 2) Bite the bullet and take off the surround ( another crappy part of an overall crappy design, but I digress.) and remove the microwave from the cabinet. Not too bad… only 2 additional screws. Unplug it or course… Probably a good first step. 3) take out about 8 little screws and remove the housing. Be very careful once you get inside… don’t mess with any of the electrical connections. These things have capacitors that hold a charge and blast you!. 4) Find the incredibly insufficient post that has broken off probably just after the warranty period. I used a #4-40 x 1” screw and nut, and some E6000 glue to glue/bolt the post back on. 5) Put the whole mess back together and reinstall. I think the root cause of the failure is that it is possible to push the release button too far (no hard stop) and over stress the ridiculously tiny plastic post. So I have cautioned the family to just push the button enough to release the door and no more. Before ours failed it got to where we had to push the button harder and farther. If this starts to happen to you and you are still under warranty report it and get it fixed. If it is not under warranty you may want to make a preemptory repair. Good luck.