Specify the cloud-delivered protection level
You can specify the level of cloud-protection offered by Microsoft Defender Antivirus with Group Policy and Microsoft Endpoint Configuration Manager.
The Microsoft Defender Antivirus cloud service is a mechanism for delivering updated protection to your network and endpoints. Although it is called a cloud service, it is not simply protection for files stored in the cloud, rather it uses distributed resources and machine learning to deliver protection to your endpoints at a rate that is far faster than traditional Security intelligence updates.
Use Intune to specify the level of cloud-delivered protection
Sign in to the Azure portal.
Select All services > Intune.
In the Intune pane, select Device configuration > Profiles, and then select the Device restrictions profile type you want to configure. If you haven't yet created a Device restrictions profile type, or if you want to create a new one, see Configure device restriction settings in Microsoft Intune.
Select Properties, select Settings: Configure, and then select Microsoft Defender Antivirus.
On the File Blocking Level switch, select one of the following:
- High: Applies a strong level of detection.
- High +: Uses the High level and applies additional protection measures (may impact client performance).
- Zero tolerance: Blocks all unknown executables.
Click OK to exit the Microsoft Defender Antivirus settings pane, click OK to exit the Device restrictions pane, and then click Save to save the changes to your Device restrictions profile.
For more information about Intune device profiles, including how to create and configure their settings, see What are Microsoft Intune device profiles?
Use Configuration Manager to specify the level of cloud-delivered protection
See How to create and deploy antimalware policies: Cloud-protection service for details on configuring Microsoft Endpoint Configuration Manager (current branch).
Use Group Policy to specify the level of cloud-delivered protection
On your Group Policy management machine, open the Group Policy Management Console.
Right-click the Group Policy Object you want to configure, and then click Edit.
In the Group Policy Management Editor go to Computer configuration.
Click Administrative templates.
Expand the tree to Windows components > Microsoft Defender Antivirus > MpEngine.
Double-click the Select cloud protection level setting and set it to Enabled. Select the level of protection:
- Default Microsoft Defender Antivirus blocking level provides strong detection without increasing the risk of detecting legitimate files.
- High blocking level applies a strong level of detection while optimizing client performance (greater chance of false positives).
- High + blocking level applies additional protection measures (may impact client performance and increase risk of false positives).
- Zero tolerance blocking level blocks all unknown executables.
While unlikely, setting this switch to High or High + may cause some legitimate files to be detected (although you will have the option to unblock or dispute that detection).