Secondary Logon (seclogon) Service Defaults in Windows 8

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:Manual
Display name:Secondary Logon
Service name:seclogon
Service type:share
Error control:normal
Object:LocalSystem
Path:%SystemRoot%\system32\svchost.exe -k netsvcs
File:%SystemRoot%\system32\seclogon.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\seclogon
Privileges:
  • SeTcbPrivilege
  • SeRestorePrivilege
  • SeBackupPrivilege
  • SeAssignPrimaryTokenPrivilege
  • SeIncreaseQuotaPrivilege
  • SeImpersonatePrivilege

Default Behavior

Secondary Logon is a Win32 service. In Windows 8 it will not be started until the user starts it. When the Secondary Logon service is started, it runs as LocalSystem in a process of svchost.exe, sharing it with other services. If Secondary Logon fails to start, the error details are added to Windows 8 error log. When the operating system startup is complete, the user is being notified that the seclogon service hasn't been started.

Restore Default Startup Configuration for Secondary Logon

1. Run the Command Prompt as an administrator.

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

sc config seclogon start= demand

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 corrupted or deleted, you can put it back in there.