Credentials in client PC

I'm running Windows 11 (V21H2) with Windows 8.1 running virtually under Hyper-V. My client, Windows 8.1 runs fine. But I'm difficulty getting RDP to work. I found some directions for doing this but I run into a problem when I get to the Remote Desktop Connection window on the client. If I type in the name of my computer (the host) and click on Connect I get a window titled Windows Security that asks me to enter my credentials (username & password). I have no idea what are these "credentials." Since my PC is single user and not connected to any network (well, I do have a wireless router, but is that a "network"?, I don't use a password to log on-I just turn on the PC and let it load Windows 11. Perhaps someone could enlighten me as to what are these "credentials" and where I might find them or enter them, if that's what I need to do. I don't recall setting up any "credentials" when I loaded Windows 11, my host (nor my client, Windows 8.1). Thank you.

Welcome to the forum

The credentials refer to the Windows (Microsoft) username and password for the client.

If you only log in with a passkey (on the client) and have never physically logged into the client computer with a username and password, go to the client PC and do so at least once. Then try RDP.

RDP can have a bug when trying to connect remotely to a PC that only uses a passkey (Windows hello)

Thanks Antspants. I would never have guessed the required "credentials" are the information I use to sign into my Microsoft account. Now if I can just find the Microsoft account user name and password (of which I have several) I'll be in like Flynn