A:Answer In short, yes it is compatible with Windows 11.
According to HP on this product: "HP Smart is compatible with Windows 11 and Windows 10 version 1809 or higher. HP values that updated operating systems offer our users increased security and privacy protection." You can read more and get the Driver and other software by going to their driver support page for Software and drivers for
HP OfficeJet Pro 6978 All-in-One Printer --that is where I got that info.
On a side note, it's pretty compatible with various operating systems. I've used it with Windows 11, 10 and macOS 12.0 Monterey.