microwave will not shut off
microwave show a E 13 error
Try unplugging for 60 seconds then plug in and try it. A E13 error usually means a heat sensor
royshirk, that will depend on the model number of your Microwave. Kenmore does not really build those, but GE, Sanyo, Samsung and others do. E13 in those is usually a bad door switch or door switch mount. So to properly determine this we would need the complete model number. Please remember that microwave ovens are inherently dangerous to service unless you know what to do. We'd hate for you to get zapped and fried. Consider to either have it professionally repaired or do get a new one.