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Microsoft wants to update your Windows 11 PC without forcing you to reboot
(www.windowscentral.com)
This is a most excellent place for technology news and articles.
With Win10 and later (I honestly don't remember with Win 8), by default updates happen in the background, and will be applied and a reboot scheduled.
It won't necessarily force a reboot, but it can reboot when you're not there. I've had updates with reboot happen when I was away for 30 minutes, on a machine I was setting up and hadn't yet configured policies.
The updates quietly happening in the background are still a problem because they can't be paused or canceled and they use a lot of sysrme resources to get done. And when they're complete, your experience is less stable till the reboot.
I usually notice them when my work computer slows down and things start having more bugs than usual. My work computer has very respectable specs