ADMX Viewer
Microsoft.Policies.WindowsDefender• Machine

Define the order of sources for downloading security intelligence updates

This policy setting allows you to define the order in which different security intelligence update sources should be contacted. The value of this setting should be entered as a pipe-separated string enumerating the security intelligence update sources in order. Possible values are: “InternalDefinitionUpdateServer”, “MicrosoftUpdateServer”, “MMPC”, and “FileShares” For example: { InternalDefinitionUpdateServer | MicrosoftUpdateServer | MMPC } If you enable this setting, security intelligence update sources will be contacted in the order specified. Once security intelligence updates have been successfully downloaded from one specified source, the remaining sources in the list will not be contacted. If you disable or do not configure this setting, security intelligence update sources will be contacted in a default order.

Policy Details

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

Configuration Elements

Define the order of sources for downloading security intelligence updates

Type: text