Why can't I share my printer on Windows 7?

Try the Printer Properties, then check the Sharing Tab

"I had Cannon MF3240 with the same problem. Right after Windows 7 x32 update and installation of Symantec Endpoint security I could not find the ""SHARING TAB"". After one hour circling around and messing up with the ""homegroup and network sharing"" options I went back to:

Start / Devices and Printers / right click on the printer / Printer Properties / Sharing (Second Tab)

... and there you go."