Microsoft Networks Client is a software feature that you must attach to a network adapter to use that adapter to connect and log in to a network helmed by a computer running a Windows Server operating system. Windows enables the Client for Microsoft Networks automatically. However, if you connect your computer to a Microsoft network and do not receive a login window when you turn on the computer, the client could be disabled. You can enable the Client for Microsoft Networks in the properties menu for that network adapter.
Click the Start button, and click "Control Panel."
Double-click the "Network Connections" icon in Windows XP or the "Network and Sharing Center" icon in Windows Vista and Windows 7. If you cannot find this icon, you may have your Control Panel displayed in the category view rather than the detailed view. Click "Switch to Classic View" in Windows XP, "Classic View" in Windows Vista and "View by: Small icons" in Windows 7 to show all icons.
Click "Manage Network Connections" in Windows Vista or "Change Adapter Settings" in Windows 7. Skip this step if your computer runs Windows XP.
Right-click the icon labeled "Local Area Connection," and click "Properties." Click "Continue" if Windows asks for administrative permission to continue.
Place a check in the "Client for Microsoft Networks" box, and click "OK."
Restart your computer to log in to the Microsoft network.