Windows Update (wuauserv) Service Defaults in Windows 10

Enables the detection, download, and installation of updates for Windows and other programs. If this service is disabled, users of your computer will not be able to use Windows Update or its automatic updating feature, and programs will not be able to use the Windows Update Agent (WUA) API.

Default Settings

Startup type:Manual
Display name:Windows Update
Service name:wuauserv
Service type:share
Error control:normal
Object:LocalSystem
Path:%SystemRoot%\system32\svchost.exe -k netsvcs
File:%SystemRoot%\system32\wuaueng.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\wuauserv
Privileges:
  • SeAuditPrivilege
  • SeCreateGlobalPrivilege
  • SeCreatePageFilePrivilege
  • SeTcbPrivilege
  • SeAssignPrimaryTokenPrivilege
  • SeImpersonatePrivilege
  • SeIncreaseQuotaPrivilege
  • SeShutdownPrivilege
  • SeDebugPrivilege

Default Behavior

Windows Update is a Win32 service. In Windows 10 it is starting only if the user, an application or another service starts it. When the Windows Update service is started, it is running as LocalSystem in a shared process of svchost.exe along with other services. If Windows Update fails to start, the failure details are being recorded into Event Log. Then Windows 10 will start up and notify the user that the wuauserv service has failed to start due to the error.

Dependencies

Windows Update cannot be started under any conditions, if the Remote Procedure Call (RPC) service is disabled.

Restore Default Startup Configuration for Windows Update

Before you begin doing this, make sure that all the services on which Windows Update depends are configured by default and function properly. See the list of dependencies above.

1. Run the Command Prompt as an administrator.

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

sc config wuauserv start= demand

3. Close the command window and restart the computer.

The wuauserv service is using the wuaueng.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 10 installation media.