According to the folks at Thurrott, the ads (starting with promotions for Microsoft’s OneDrive cloud storage service) are easing their way into the upcoming Creators Update, which some people are currently testing in beta. There are also similar notifications in the previously released Anniversary Update. Nobody asked for this, and yet, here we are.
Link: Windows 10 is bringing shitty ads to File Explorer, here’s how to turn them off
At this point in time, it’s safe to say that most copies of Windows 10 are legit, which means Microsoft has already made money off of it. Unfortunately, it looks like the company is thirsting for more, and wants to inject ads into its File Explorer tool.