https://www.pcgamer.com/how-to-ditch-the-ads-in-the-windows-10-creators-update/
Share Dialog Ads
With the Creators Update, Microsoft added a new Share pane to File Explorer. By default, you are not just shown your own list of installed apps, but also suggested apps that Microsoft thinks you might be interested in grabbing from the Windows Store.
Microsoft is hardly a stranger to making controversial decisions with Windows, and it has previously been accused of taking liberties by using the operating system to advertise its other products and services. Windows 11 may not even been officially released yet, but the company seems to have learned nothing and has started injecting ads into the latest version of its operating system.
https://www.onmsft.com/news/windows-11-optional-update-search-highlights
For those unfamiliar, search highlights is a feature for the Windows 11 search box. It will show you notable and interesting moments of what’s special about each day of the year. You’ll see things like holidays, anniversaries, and educational moments in time in your region. That sometimes means seeing a Google doodle-like animation and image in the search box area
of course let no forgot the ads for w10 on windows 7