Remove the Stored User names and Passwords

To remove the Stored User Names and Passwords from your system, try this:

Click Start>

Run>

and type

Control keymgr.dll

Remove the entries from the list.

The other ways to access this dialog are:

Type

Control Userpasswords2 

in RUN box, click Advanced, Manage Passwords

-or-

From Control Panel, select your User Account, click Manage your network passwords