Hii, rogansam this side, so lets start the solve of HP printer Offline so, To resolve the why is my hp printer offline problem on Windows 10, try the following solutions: Type "Devices" into the search bar or ask Cortana to open the Devices app. And Select your printers and scanners., Ensure that the why is my HP printer offline checkbox for "Let Windows manage my default printer" is not selected. To deselect it, if necessary, click the box, Pick your printer using the drop-down menu. Choose the list that indicates your printer is online or idle if it appears on more than one list, then click Manage. When the button is clicked, it takes on the default state.