Secondary Logon (seclogon) Service Defaults in Windows XP

Enables starting processes under alternate credentials. If this service is stopped, this type of logon access will be unavailable. If this service is disabled, any services that explicitly depend on it will fail to start.

Default Settings

Startup type:Automatic
Display name:Secondary Logon
Service name:seclogon
Error control:ignore
Object:LocalSystem
Path:%SystemRoot%\System32\svchost.exe -k netsvcs
File:%SystemRoot%\System32\seclogon.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\seclogon

Default Behavior

In Windows XP it is starting automatically along with the operating system. If the Secondary Logon fails to load or initialize, Windows XP start up proceeds without error messages, but information about the failure is being written into Event Log.

Restore Default Startup Configuration for Secondary Logon

1. Run the Command Prompt.

2. Copy the commands below, paste them into the command window and press ENTER:

sc config seclogon start= auto
sc start seclogon

3. Close the command window and restart the computer.

The seclogon service is using the seclogon.dll 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.