HP Printer Offline Mac Why is my HP Printer Offline Mac? There can be several reasons why an HP Printer Offline Mac may be offline on a Mac computer. Some common causes include connectivity issues between the printer and the computer, outdated software, incorrect settings, or issues with the printer's hardware. Other possible for HP Printer Offline Mac causes may include software conflicts, network connectivity issues, or problems with the printer driver. To resolve the issue, users may need to troubleshoot the problem by checking the printer's connection, updating the software, adjusting settings, and restarting the printer and the Mac computer.