powercfg /lastwake will tell you why the machine woke up.
Honestly I'm not sure where else you can find that information.
Honestly I'm not sure where else you can find that information.
lastwake will be blank and the power report will just tell you it changed state but give no reason.
One would hope that powercfg /lastwake provides some information, but it doesn't.
There is a big difference between how Window should work in theory and what happens in practice.