Resolved! None of the HP suggestions worked, but in Windows under Settings / Bluetooth & Devices, I completely removed the device. I then asked Windows to find Printer - the Envy came up on the search - and it reinstalled. An easy solution eventually, but I wasted about three hours going through the HP resolutions. Posting this here as when I Googled the initial problem I saw no posts where the printer IS online but the system doesn't recognise it.
↧