Update Windows Defender Antivirus on Azure Stack
Windows Defender Antivirus is an antimalware solution that provides security and virus protection. Every Azure Stack infrastructure component (Hyper-V hosts and virtual machines) is protected with Windows Defender Antivirus. For up-to-date protection, Windows Defender Antivirus definitions, engine, and platform require periodic updates. How updates are applied depends on your configuration.
For antimalware definition and engine updates, the Azure Stack update resource provider downloads antimalware definitions and engine updates multiple times per day. Each Azure Stack infrastructure component gets the update from the update resource provider and applies the update automatically.
For antimalware platform updates, apply the monthly Azure Stack update. The monthly Azure Stack update includes Windows Defender Antivirus platform updates for the month.
Apply the monthly Azure Stack update. The monthly Azure Stack update includes Windows Defender Antivirus definitions, engine, and platform updates for the month.