Microsoft uses giant four-page popup to push Windows 10 users to upgrade to Windows 11

Windows 10 users started seeing full-screen pop-ups after installing a cumulative update release in May 2023. Now, the pop-up is back again on our Windows 10 PC after installing the optional update released in January 2024, and it gouges the eyes. No one expects a gigantic multi-slide advert using their PCs (web browsers are a different story).
↫ Abhishek Mishra

Windows is an advertising platform first, operating system second. You should be expecting ads.