Hello,
Can you share the Command Prompt output from either the "quser" or "qwinsta" command on the Windows 10 device? This will help us identify any active remote desktop sessions.
You might want to ensure there isn't a lingering session causing the issue. Open Task Manager, navigate to the "Users" tab, and locate your user account in the list. If you find an active session, right-click on it and select "Disconnect" to terminate the session. Once you've disconnected any existing sessions, attempt to connect again from your Windows 11 device.