Safety: Unplug the microwave before tightening screws or moving it.

Remove items from top: Take off any objects placed on top of the microwave that may rattle.
Level the unit: Ensure the microwave sits flat on a stable surface. Adjust feet if available.
Tighten screws: Check accessible screws on the outer cabinet and handle; tighten any that are loose.
Internal components (advanced): If noise persists, a technician can inspect the fan, turntable motor, and mounting brackets for looseness.

Microwave is very noisy (rattling or vibration) during operation

Possible Causes