![]() ![]() C:\Windows\System32\cmd.exe /c Dism /Online /Enable-Feature /FeatureName:Windows-Defender-FeaturesĬ:\Windows\System32\cmd. We found that Windows Defender periodically pings the Microsoft Update Center and checks for any new signature definition updates. To determine our best course of action, our first step was to comprehensively understand the Windows Defender update process. You'll have exploit protection and you can customize protection settings for your devices. Understanding the Windows Defender Update Process. When the DISM command is being used within a task sequence running PowerShell, the following path to cmd.exe is required. App & browser control - Update settings for Microsoft Defender SmartScreen to help protect your device against potentially dangerous apps, files, sites, and downloads. # For Windows Server 1803 and later, including Windows Server 20 Run the following commands: # For Windows Server 2016ĭism /Online /Enable-Feature /FeatureName:Windows-Defender-Featuresĭism /Online /Enable-Feature /FeatureName:Windows-Defenderĭism /Online /Enable-Feature /FeatureName:Windows-Defender-Gui In case the Defender feature was uninstalled/removed, you can add it back. Re-enable Microsoft Defender Antivirus on Windows Server if it was uninstalled On Windows Server 2016, in some cases, you may need to use the Malware Protection Command-Line Utility to re-enable Microsoft Defender Antivirus.Īs a local administrator on the server, perform the following steps: ![]() If Microsoft Defender Antivirus features and installation files were previously removed from Windows Server 2016, follow the guidance in Configure a Windows Repair Source to restore the feature installation files. For more information, see Troubleshoot Microsoft Defender Antivirus while migrating from a third-party solution. Re-enable Microsoft Defender Antivirus on Windows Server if it was disabledįirst, ensure that Microsoft Defender Antivirus is not disabled either through Group Policy or registry. This script can also assist in re-enabling Microsoft Defender Antivirus. If you're preparing to install the modern, unified solution on Windows Server 2016, you can leverage the Installer help script to automate the platform update and the subsequent installation and onboarding. Alternatively, you can download the update package from the Microsoft Update Catalog or from the Antimalware and cyber security portal. As MECM admin, you only must configure this setting once, test it and you will most likely not hear of outdated Defender Definitions anymore. Monthly Cumulative Updates and other Updates are not affected by this setting. You can download and install the latest platform version using Windows update. If you configure Microsoft Update in the Definition Update Sources only Defender will update from Microsoft Update. Re-enabling Microsoft Defender Antivirus doesn't automatically install the platform update. ![]()
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