Windows Defender - Configuration Details

About this task

Windows Defender configuration enables administrators to configure antivirus settings for Windows Modern device(s).

General

Feature Description
Real-time Monitoring Enables Windows Modern Defender's real-time monitoring functionality.
Real-time Scan Direction

Select a set of files to scan from the following directions:

  • Scan incoming and outgoing files
  • Scan incoming files only
  • Scan outgoing files only
Cloud Protection Enable this option to join Microsoft Advanced Protection Service (MAPS).
Cloud Block Level Choose from following levels to block and scan suspicious files:
  • Default
  • High
  • High Plus
  • Zero
Submit Samples Consent

Enable this policy setting to configure the behavior of sample submissions when opting for MAPS telemetry. Choose from the following:

  • Always Prompt
  • Send Safe Samples Automatically
  • Never Send
  • Send All Samples Automatically
Cloud Block Timeout Set a value after which Windows Defender blocks Cloud services,
Note: Microsoft Defender antivirus blocks a suspicious file up to 50 seconds.
Signature Update Interval Specify the internal (in hours) to check for security intelligence updates.
Signature Update File Share Sources Configure Universal Naming Convention (UNC) file share sources for downloading security intelligence updates.
Check For Signature Before Running Scan Enable this option to check for new security intelligence before running a scan.
Signature Update Fallback Order

Enable this setting to specify the order in which to contact different security intelligence update sources.

Exclusions

Feature Description
Excluded Extensions Specify a list of file type extensions to ignore during a scan.
Excluded Paths Specify a list of directory paths to ignore during a scan.
Excluded Processes Specify a list of files opened by processes to ignore during a scan.

Additional Settings

Feature Description
Scan Email Enable scanning policy settings to scan emails.
Scan Network Files Enable scanning policy settings to configure real-time scanning for files accessed over the network.
Scan Scripts Enable scanning policy settings to scan scripts.
Scan Archives Enable scanning policy settings to configure scans for malicious software in archive files.
Note: This setting does not apply with Temper protection enabled.
UI Access Disable scanning policy settings to block a user's access to the Windows Defender Antivirus UI.
Low CPU Priority Enable scanning policy settings to configure low CPU priority for the scheduled scans.
Scan CPU Load Factor(%) Configure the maximum percentage of CPU usage allowed during a scan.
Behavior Monitoring Enable the scanning policy to configure Behavior Monitoring.
Note: This setting does not apply with Temper protection enabled.
Intrusion Prevention System Enable scanning policy settings to configure Windows Defender Intrusion Prevention.
PUA Protection Enable scanning policy settings to configure detection of Potentially Unwanted Applications (PUA).
IOAV Protection Enable scanning policy settings to configure the scanning of all downloaded files and attachments.
Note: This setting does not apply with Temper protection enabled.
On Access Protection Enable scanning policy settings to configure file monitoring and program activity.
Note: This setting does not apply with Temper protection enabled.

Full Scan Settings

Feature Description
Full Scan Required Enable this scanning policy setting to configure a full scan.
Scan Day Select the day to perform the scheduled scan.
Scan Time Select the time of the day to run the full scan.
Note: Full scan runs between 12:00 AM to 11:00 PM.
Catchup Full Scan Enable this scanning policy setting to run a catchup scan if defender misses a full scan.
Note: This scan runs after two missed scheduled scans.
Scan Mapped Network Drives Enable this scanning policy setting to scan mapped network drives.
Scan Removable Drives Enable this scanning policy setting to scan removable drives such as USB flash drives.

Quick Scan Settings

Feature Description
Quick Scan Select the time of day for quick scan to run daily.
Note: Quick scan runs between 12:00 AM to 11:00 PM.
Catchup Quick Scan Enable this scanning policy setting to run a catchup scan if defender misses the quick scan.
Note: This scan runs after two missed scheduled scans.