Apparently this was discovered when an “experimental” banner started showing up in people’s file manager. According to Microsoft it was never supposed to be shown externally.
Bottom line, this is already built into the Microsoft operating system, all they have to do is to decided to turn it on.
So after you have already paid for the operating system, Microsoft wants to make more money from you by blasting even more ads than you already see.
Isn’t enough enough?
And what other back doors are embedded in the operating system that we just don’t know about yet? Big Brother are you listening?
https://futurism.com/the-byte/microsoft-ads-windows-file-manager