ADMX Viewer
Microsoft.Policies.WindowsDefender• Machine

Check for the latest virus and spyware security intelligence on startup

This policy setting allows you to manage whether a check for new virus and spyware security intelligence will occur immediately after service startup. If you enable this setting, a check for new security intelligence will occur after service startup. If you disable this setting or do not configure this setting, a check for new security intelligence will not occur after service startup.

Policy Details

Policy Name
SignatureUpdate_UpdateOnStartup
Registry Key
Software\Policies\Microsoft\Windows Defender\Signature Updates
Value Name
UpdateOnStartUp
Supported On
At least Windows Server 2012, Windows 8 or Windows RT
OMA-URI (CSP)
ADMX_MicrosoftDefenderAntivirus/SignatureUpdate_UpdateOnStartup
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: 1
Disabled: 0
Available Languages
en-us