SmartThings: Turn ZigBee security features on or off

The SmartThings hub lets users avoid potential misuse of the ZigBee Home Automation feature known as Insecure Rejoin in SmartThings Classic, and Secure Mode in SmartThings. This feature can be turned on or off.

If your microwave is not turning on, or if it is turning off by itself, it could have overheated. When a microwave has been in use for a long time and overheats, just give it 30 minutes to cool off and then try to use it again. Otherwise, you'll need to check the light, the outlet, and the power cord.