The 5 most common part(s) or condition(s) which cause the symptom Microwave door won't open are listed below starting with the most likely. Check or test each item and watch any available videos.
RepairClinic Item # 1065792
If the microwave door won't open the open lever might be broken. This part can be replaced separately.
RepairClinic Item # 909518
If the microwave door won't open the door hook might not be releasing properly. The door hook is installed inside the door and normally releases when the door is opened. The hook is made of plastic and will break over time. When this happens it will need to be replaced, it can't be repaired.
RepairClinic Item # 555872
If the microwave door won't open the button spring might be broken internally. The button spring can be replaced.
RepairClinic Item # 1065838
If the microwave door won't open the button might be broken internally. The button can be replaced.