A microwave can disrupt your wi-fi signal

The radiation emitted from microwaves and Wi-Fi connections are in the same range of frequencies. It's possible that a powerful microwave could disrupt a weak wi-fi signal within 3 meters from each other. However, this is unlikely, and if it is happening frequently, your microwave is emitting too much radiation. There might be a leak, and you should probably think about getting a new microwave.