Initiate security intelligence update on startup

Supported on: At least Windows Server 2012, Windows 8 or Windows RT

Registry

HKLM Software\Policies\Microsoft\Windows Defender\Signature Updates

Value name: DisableUpdateOnStartupWithoutEngine

Enabled: DisableUpdateOnStartupWithoutEngine = 0

Disabled: DisableUpdateOnStartupWithoutEngine = 1

Description

This policy setting allows you to configure security intelligence updates on startup when there is no antimalware engine present. If you enable or do not configure this setting, security intelligence updates will be initiated on startup when there is no antimalware engine present. If you disable this setting, security intelligence updates will not be initiated on startup when there is no antimalware engine present.