Originally Posted by Marvin
If you open system preferences and choose print & scan, the printer should be listed in there and allow you to check the details of it. If it's not listed, you can add it manually.
If it brings up a dialog with those values, try using the Windows login details for the machine the printer is connected to.
I'll try again with an explanation. I am able to add the printer. It is connected via USB to a PC. When adding I added as a Windows printer and found it on the home network.
I opened Texedit and type a few words and then sent it to print. The printer icon shows status of "On Hold (Authentication required)".
When I click on resume it states: "Enter your name and password for the printer "Epson Stylus Photo R320 (M)"". I do not know what user name and password it's talking about. The printer is set up so anyone can use it. I don't log in to that PC with a user name and password.
For what it's worth. I dual boot my MacBook with Ubuntu and did not have any issue like this. I found the printer, installed the drivers and it prints like a charm without asking for name and pw.