If either is incorrectly spelled the system will deny access and reject the password as invalid.

On our UNIX systems, capitalization is significant, therefore; all user names must be spelled using lower case characters.

User names and passwords never contain a "space" character (not even at the end)

From the desktop-

Click on My Computer
Click on Dial-Up Networking
Right click on the dialer you use to call MIC&S
Go all the way down to the bottom of the menu and left click on Properties
Click on the Server Types tab
Uncheck "Log onto Network" if selected by clicking on the check box.
Click on OK
Close all open windows
Try to login now.