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windows/security/threat-protection/microsoft-defender-antivirus/configure-real-time-protection-microsoft-defender-antivirus.md
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@ -34,23 +34,33 @@ You can use **Local Group Policy Editor** to enable and configure Microsoft Defe
To enable and configure always-on protection:
1. Open **Local Group Policy Editor**. To do this:
1. In your Windows 10 taskbar search box, type **gpedit**.
2. Under **Best match**, click **Edit group policy** to launch **Local Group Policy Editor**.
![GPEdit taskbar search result](images/gpedit-search.png)
1. Under **Best match**, click **Edit group policy** to launch **Local Group Policy Editor**.
![GPEdit taskbar search result](images/gpedit-search.png)
2. In the left pane of **Local Group Policy Editor**, expand the tree to **Computer Configuration** > **Administrative Templates** > **Windows Components** > **Microsoft Defender Antivirus**.
3. Configure the Microsoft Defender Antivirus antimalware service policy settings. To do this:
1. In the **Microsoft Defender Antivirus** details pane on right, double-click the policy setting as specified in the following table:
| Setting | Description | Default setting |
|-----------------------------|------------------------|-------------------------------|
| Allow antimalware service to startup with normal priority | You can lower the priority of the Microsoft Defender Antivirus engine, which may be useful in lightweight deployments where you want to have as lean a startup process as possible. This may impact protection on the endpoint. | Enabled
| Allow antimalware service to remain running always | If protection updates have been disabled, you can set Microsoft Defender Antivirus to still run. This lowers the protection on the endpoint. | Disabled |
2. Configure the setting as appropriate, and click **OK**.
3. Repeat the previous steps for each setting in the table.
1. Configure the setting as appropriate, and click **OK**.
1. Repeat the previous steps for each setting in the table.
4. Configure the Microsoft Defender Antivirus real-time protection policy settings. To do this:
1. In the **Microsoft Defender Antivirus** details pane, double-click **Real-time Protection**. Or, from the **Microsoft Defender Antivirus** tree on left pane, click **Real-time Protection**.
2. In the **Real-time Protection** details pane on right, double-click the policy setting as specified in the following table:
1. In the **Real-time Protection** details pane on right, double-click the policy setting as specified in the following table:
| Setting | Description | Default setting |
|-----------------------------|------------------------|-------------------------------|
@ -67,42 +77,54 @@ To enable and configure always-on protection:
| Configure local setting override for monitoring for incoming and outgoing file activity | Configure a local override for the configuration of monitoring for incoming and outgoing file activity. This setting can only be set by Group Policy. If you enable this setting, the local preference setting will take priority over Group Policy. If you disable or do not configure this setting, Group Policy will take priority over the local preference setting. | Enabled |
| Configure monitoring for incoming and outgoing file and program activity | Specify whether monitoring should occur on incoming, outgoing, both, or neither direction. This is relevant for Windows Server installations where you have defined specific servers or Server Roles that see large amounts of file changes in only one direction and you want to improve network performance. Fully updated endpoints (and servers) on a network will see little performance impact irrespective of the number or direction of file changes. | Enabled (both directions) |
3. Configure the setting as appropriate, and click **OK**.
4. Repeat the previous steps for each setting in the table.
1. Configure the setting as appropriate, and click **OK**.
1. Repeat the previous steps for each setting in the table.
5. Configure the Microsoft Defender Antivirus scanning policy setting. To do this:
1. From the **Microsoft Defender Antivirus** tree on left pane, click **Scan**.
![Microsoft Defender Antivirus Scan options](images/gpedit-windows-defender-antivirus-scan.png)
2. In the **Scan** details pane on right, double-click the policy setting as specified in the following table:
1. In the **Scan** details pane on right, double-click the policy setting as specified in the following table:
| Setting | Description | Default setting |
|-----------------------------|------------------------|-------------------------------|
| Turn on heuristics | Heuristic protection will disable or block suspicious activity immediately before the Microsoft Defender Antivirus engine is asked to detect the activity. | Enabled |
3. Configure the setting as appropriate, and click **OK**.
1. Configure the setting as appropriate, and click **OK**.
6. Close **Local Group Policy Editor**.
## Disable real-time protection in Group Policy
> [!WARNING]
> Disabling real-time protection drastically reduces the protection on your endpoints and is not recommended.
The main real-time protection capability is enabled by default, but you can disable it by using **Local Group Policy Editor**.
To disable real-time protection in Group policy:
1. Open **Local Group Policy Editor**.
1. In your Windows 10 taskbar search box, type **gpedit**.
2. Under **Best match**, click **Edit group policy** to launch **Local Group Policy Editor**.
1. Under **Best match**, click **Edit group policy** to launch **Local Group Policy Editor**.
2. In the left pane of **Local Group Policy Editor**, expand the tree to **Computer Configuration** > **Administrative Templates** > **Windows Components** > **Microsoft Defender Antivirus** > **Real-time Protection**.
3. In the **Real-time Protection** details pane on right, double-click **Turn off real-time protection**.
![Turn off real-time protection](images/gpedit-turn-off-real-time-protection.png)
![Turn off real-time protection](images/gpedit-turn-off-real-time-protection.png)
4. In the **Turn off real-time protection** setting window, set the option to **Enabled**.
![Turn off real-time protection enabled](images/gpedit-turn-off-real-time-protection-enabled.png)
![Turn off real-time protection enabled](images/gpedit-turn-off-real-time-protection-enabled.png)
5. Click **OK**.
6. Close **Local Group Policy Editor**.
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