I turned on my microwave and, suddenly, some of the outlets stopped working.

Hello, I would like some help with a situation.

When I turn on my microwave, three outlets (including the one on the microwave itself) stop working. I've already measured them with a multimeter, and they show almost zero voltage. The strangest thing is that, gradually, the voltage starts to rise, going from 0V to 30V, from 30V to 70V until it reaches the normal 127V. And, when I turn on the microwave, they go back to 0.