How do I find network credentials user name and password? - Microsoft Community: The answer to the actual question - how do I find Network Credentials? - which no-one actually answered - is to Hit WIN R & type Netplwiz 'Enter' Key on the Target Computer
and then you will see the Username that is required.
'Netplwiz.exe' is the hidden Control Panel Feature that is the secret that holds the key to this problem.