my experience is that you can have ONE account on a Win machine per device/IP address. It could be the user account, OR the admin account.
If you have no accounts that have been connected from the PC. . . the first time you try to access it will request credentials. Once you enter one set of credentials. . . it will reject the other set of credentials. (unless you do something in the credential manager)
Yes. … the OS/5 seems better behaved on my system that OS/3 as well. . . .as I use it. The web apps (and the associated indexing) is where the problems start.
Edit: Also, check this: Network credentials are incorrect from my Windows 10 and i can't map again my shared units of my PR4100
