An over-the-range microwave is mounted to the wall and cabinet above your stove, so removing it safely is the hard part. It is heavy and hangs over the cooktop, which means you need a second person to support it the moment the mounting bolts come free.
Pro tip: Keep the mounting bolts and the paper installation template taped inside the microwave for reinstallation.
Watch out: The unit will drop onto the cooktop the moment the bolts come out. A second person must support it from below.