[B]Questions[/B] [B]Answers[/B] Printer model: HP M401n Print Frequency: Every Day Firmware version: Firmware Update: 20160224 Connection: Networked to 100Mbps 5-port switch. 5-port switch connected to managed 24-port gigabit. Current OS: Windows 10 for me, Windows 7 for my normal users, Ubuntu Linux from POS software. # of Machines Tried: 10. # of Users Tried: ~10. Applications Tried: Word, Excel, Notepad, Proprietary POS... Error Messages: Printing Document, Cancelling Document, Ready Cartridges Used: Tried a CE505X and CE505A to solve a different problem. [B]What steps you have already tried?[/B] [LIST] [*]Step 1 - Rebooted [*]Step 2 - Factory Reset [*]Step 3 - Upgraded Firmware [/LIST] [B]Pictures:[/B] No pics.