ADMX Viewer
Microsoft.Policies.WindowsDefender• Machine

Initiate security intelligence update on startup

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.

Policy Details

Policy Name
SignatureUpdate_DisableUpdateOnStartupWithoutEngine
Registry Key
Software\Policies\Microsoft\Windows Defender\Signature Updates
Value Name
DisableUpdateOnStartupWithoutEngine
Supported On
At least Windows Server 2012, Windows 8 or Windows RT
OMA-URI (CSP)
ADMX_MicrosoftDefenderAntivirus/SignatureUpdate_DisableUpdateOnStartupWithoutEngine
OS Build Version:10.0.22000, 10.0.19043.1202, 10.0.19042.1202, 10.0.19041.1202
CSP Version:10.0
Conflict Resolution:LastWrite
Allowed Editions:
EnterpriseEnterprise NProfessionalProfessional NEnterprise EvaluationEnterprise N EvaluationEducationEducation NEnterprise SEnterprise S NEnterprise S EvaluationEnterprise S N EvaluationHolographic BusinessPro Single LanguagePro ChinaPro WorkstationPro Workstation NPro For EducationPro For Education NEnterprisegEnterprisegnServerrdshIotenterpriseIotenterprisesCloudeditionnCloudeditionIotenterpriseskIotenterpriseseval
Policy State Values
Enabled: 0
Disabled: 1
Available Languages
en-us