Initiate security intelligence update on startup
- Policy ID
- SignatureUpdate_DisableUpdateOnStartupWithoutEngine
- Scope
- Computer Configuration
- Supported on
- At least Windows Server 2012, Windows 8 or Windows RT
- Source
- Administrative Templates (.admx) for Windows 11 2026 Update (26H2) (version 1.0)
- Category
- Windows Components › Microsoft Defender Antivirus › Security Intelligence Updates
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.
Registry
ComputerHKEY_LOCAL_MACHINE
- DisableUpdateOnStartupWithoutEngineREG_DWORD