There are videos on how to disable it permanently
Mine has a setting for sound off, which is great because it is a horrific loud beep, three times that doesn’t stop even if you try to interrupt it with a button or by opening the door. Anytime we have a power outage, it resets and I turn that damn beep off before I even change the clock because it annoys me so much.

THIS NEEDS TO BE MAINSTREAM.

There is very little reason that with the digital behemoths that microwaves are now, that a simple “sound off” setting can’t be done.

I would also love a “sound off for this cycle” option, but that might be being too needy

Even an analog switch on the back would be simple and easy to add.