Turning Off and On Password Protected Sharing in a Home Network
Open the Windows Control Panel, and then click Network and Internet.
The Network and Internet window appears.
Click Network and Sharing Center.
The Network and Sharing Center window appears.
In the left pane, click Change Advanced Sharing Settings.
Windows creates separate network profiles for each of your networks (for example, Home or Work and Public).
Under the profile you wish to change, scroll to the Password Protected Sharing section and click Turn Off Password Protected Sharing or Turn On Password Protected Sharing (default). Click Save Changes.
Windows 7 saves your changes to the password protected sharing settings.