Microsoft is putting OneDrive ads in Windows 10’s File Explorer

Microsoft has made a bad habit of introducing ads here and there throughout Windows, and now people are starting to notice them showing up in another spot: inside File Explorer.
People have reported seeing notifications to sign up for OneDrive — Microsoft’s cloud storage service — at the top of the Quick Access screen that comes up when you open a new File Explorer window.
Microsoft can reach a ton of people this way
Someone on Reddit reported seeing a prompt to sign into OneDr