I have a mixed network. Some PCs running windows 10 upgraded from 7, and some running XP Pro. Before I upgraded the Windows 7 machines to Windows 10 I could access the printer from the XP Pro and the Windows 7 PCs.

My printer is an Epson Stylus Photo R2400. It is connected to a Windows 10 PC. It is shared and I can print from the Windows 10 computers. I had to download drivers to get the printer to work though.

Although I can print from my Windows 10 PCs I cannot see the files on the printer PC. When I try to access files on the PC that has the printer attached, the User folder contains: Default, Default.migrated and desktop.ini. I think that all the files on the printer PC are shared. When I right click on a file I get the sub menu with the option to Stop Sharing.

The Add Printer Wizard on the XP PC finds the printer but wants me to connect to the printer via a User name and Password. If I add my login details that I use to login to the printer PC I get a warning message: "The credentials supplied conflict with an existing set of credentials. Overwriting the existing set of credentials may cause some running applications to stop function (sic) properly. Do you really want to overwrite the existing set of credentials?"

Since I can access the printer from the other PCs that are running Windows 10 I am reluctant to risk damage to what I have running properly by overwriting something.