How to Monitor Windows Network Logins

1. Click the Windows 'Start' button. Type 'secpol.msc' into the text box. Press 'Enter' to open the security policy editor.
2. Double-click 'Local Policies' to view a list of options. Click 'Audit Policy.' This displays several events in the center details pane.
3. Double-click 'Audit account log-on events.' This opens a configuration dialog box. Choose 'Both' from the drop-down box. This logs each time a user logs in successfully or unsuccessfully. Click 'OK' to save your settings.