A:Answer I'm so glad you asked, Annie! It is normal for the exterior of the microwave to become warm during use, especially when in use for an extended period of time. However, if the exterior of the microwave ever becomes too hot to touch, we ask that you contact us immediately for further assistance. You can reference ticket number 1143590677, and contact us directly through Facebook Messenger: http://m.me/samsungsupport; or Twitter: https://twitter.com/messages/compose?recipient_id=18768513. ^Jecca