Net Logon (Netlogon) Service Defaults in Windows XP

Supports pass-through authentication of account logon events for computers in a domain.

Default Settings

Startup type:Manual
Display name:Net Logon
Service name:Netlogon
Service type:share
Error control:normal
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Netlogon

Default Behavior

Net Logon is a Win32 service. In Windows XP it won't start until the current user starts it. When the Net Logon service is started, it is running as LocalSystem in a shared process of lsass.exe. Other services and drivers are allowed to run in the same process. If the Net Logon fails to start, the technical information about the error is added to the Event Log. Windows XP startup should proceed, but a message box should be displayed informing the user that the Netlogon service has failed to start.


Net Logon depends on the Workstation service.

Restore Default Startup Configuration for Net Logon

1. Select your Windows XP edition and service pack, and then click Download.

2. Save the WinXP_Netlogon_Service_Startup.cmd file to a local storage device.

3. Run the saved file.

4. Restart the computer.

The Netlogon service is using the lsass.exe file that is located in the %WinDir%\system32 folder. If the file is changed, damaged or deleted, you can restore its original version from Windows XP installation media.