It's completely inconsistent with traditional Windows design language and there's no "Cancel" button or an X in the corner to click on so you can't cancel out of it with your mouse and have to reach for Esc on your keyboard
It also tries to funnel you into a shitty Microsoft service
also this specific prompt absolutely filled me with rage for a long time. you can just click not on the window to cancel it but WHY is there no x in the corner to cancel out? disgusting design.