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22
windows/security/threat-protection/microsoft-defender-antivirus/detect-block-potentially-unwanted-apps-microsoft-defender-antivirus.md
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@ -11,7 +11,7 @@ author: denisebmsft
ms.author: deniseb ms.author: deniseb
ms.custom: nextgen ms.custom: nextgen
audience: ITPro audience: ITPro
ms.date: 02/01/2021 ms.date: 02/03/2021
ms.reviewer: ms.reviewer:
manager: dansimp manager: dansimp
ms.technology: mde ms.technology: mde
@ -112,21 +112,13 @@ For System Center 2012 Configuration Manager, see [How to Deploy Potentially Unw
#### Use Group Policy to configure PUA protection #### Use Group Policy to configure PUA protection
1. Download and install [Administrative Templates (.admx) for Windows 10 October 2020 Update (20H2)](https://www.microsoft.com/download/details.aspx?id=102157) 1. Download and install [Administrative Templates (.admx) for Windows 10 October 2020 Update (20H2)](https://www.microsoft.com/download/details.aspx?id=102157)
2. On your Group Policy management computer, open the [Group Policy Management Console](https://docs.microsoft.com/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc731212(v=ws.11)). 2. On your Group Policy management computer, open the [Group Policy Management Console](https://docs.microsoft.com/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/cc731212(v=ws.11)).
3. Select the Group Policy Object you want to configure, and then choose **Edit**. 3. Select the Group Policy Object you want to configure, and then choose **Edit**.
4. In the **Group Policy Management Editor**, go to **Computer configuration** and select **Administrative templates**. 4. In the **Group Policy Management Editor**, go to **Computer configuration** and select **Administrative templates**.
5. Expand the tree to **Windows Components** > **Microsoft Defender Antivirus**. 5. Expand the tree to **Windows Components** > **Microsoft Defender Antivirus**.
6. Double-click **Configure detection for potentially unwanted applications**. 6. Double-click **Configure detection for potentially unwanted applications**.
7. Select **Enabled** to enable PUA protection. 7. Select **Enabled** to enable PUA protection.
8. In **Options**, select **Block** to block potentially unwanted applications, or select **Audit Mode** to test how the setting works in your environment. Select **OK**. 8. In **Options**, select **Block** to block potentially unwanted applications, or select **Audit Mode** to test how the setting works in your environment. Select **OK**.
9. Deploy your Group Policy object as you usually do. 9. Deploy your Group Policy object as you usually do.
#### Use PowerShell cmdlets to configure PUA protection #### Use PowerShell cmdlets to configure PUA protection
@ -134,19 +126,17 @@ For System Center 2012 Configuration Manager, see [How to Deploy Potentially Unw
##### To enable PUA protection ##### To enable PUA protection
```PowerShell ```PowerShell
Set-MpPreference -PUAProtection Enabled Set-MpPreference -PUAProtection Enabled
``` ```
Setting the value for this cmdlet to `Enabled` turns the feature on if it has been disabled. Setting the value for this cmdlet to `Enabled` turns the feature on if it has been disabled.
##### To set PUA protection to audit mode ##### To set PUA protection to audit mode
```PowerShell ```PowerShell
Set-MpPreference -PUAProtection AuditMode Set-MpPreference -PUAProtection AuditMode
``` ```
Setting `AuditMode` detects PUAs without blocking them. Setting `AuditMode` detects PUAs without blocking them.
##### To disable PUA protection ##### To disable PUA protection
@ -154,10 +144,9 @@ Setting `AuditMode` detects PUAs without blocking them.
We recommend keeping PUA protection turned on. However, you can turn it off by using the following cmdlet: We recommend keeping PUA protection turned on. However, you can turn it off by using the following cmdlet:
```PowerShell ```PowerShell
Set-MpPreference -PUAProtection Disabled Set-MpPreference -PUAProtection Disabled
``` ```
Setting the value for this cmdlet to `Disabled` turns the feature off if it has been enabled. Setting the value for this cmdlet to `Disabled` turns the feature off if it has been enabled.
See [Use PowerShell cmdlets to configure and run Microsoft Defender Antivirus](use-powershell-cmdlets-microsoft-defender-antivirus.md) and [Defender cmdlets](https://docs.microsoft.com/powershell/module/defender/index) for more information on how to use PowerShell with Microsoft Defender Antivirus. See [Use PowerShell cmdlets to configure and run Microsoft Defender Antivirus](use-powershell-cmdlets-microsoft-defender-antivirus.md) and [Defender cmdlets](https://docs.microsoft.com/powershell/module/defender/index) for more information on how to use PowerShell with Microsoft Defender Antivirus.
@ -167,7 +156,6 @@ See [Use PowerShell cmdlets to configure and run Microsoft Defender Antivirus](u
PUA events are reported in the Windows Event Viewer, but not in Microsoft Endpoint Manager or in Intune. You can also use the `Get-MpThreat` cmdlet to view threats that Microsoft Defender Antivirus handled. Here's an example: PUA events are reported in the Windows Event Viewer, but not in Microsoft Endpoint Manager or in Intune. You can also use the `Get-MpThreat` cmdlet to view threats that Microsoft Defender Antivirus handled. Here's an example:
```console ```console
CategoryID : 27 CategoryID : 27
DidThreatExecute : False DidThreatExecute : False
IsActive : False IsActive : False
@ -188,7 +176,7 @@ See [Troubleshoot event IDs](troubleshoot-microsoft-defender-antivirus.md) for d
### Allow-listing apps ### Allow-listing apps
Sometimes a file is erroneously blocked by PUA protection, or a feature of a PUA is required to complete a task. In these cases, a file can be allow-listed. Sometimes a file is erroneously blocked by PUA protection, or a feature of a PUA is required to complete a task. In these cases, a file can be allow-listed.
For more information, see [Recommended antivirus exclusions for Configuration Manager site servers, site systems, and clients](https://docs.microsoft.com/troubleshoot/mem/configmgr/recommended-antivirus-exclusions#exclusions). For more information, see [Recommended antivirus exclusions for Configuration Manager site servers, site systems, and clients](https://docs.microsoft.com/troubleshoot/mem/configmgr/recommended-antivirus-exclusions#exclusions).

15
windows/security/threat-protection/microsoft-defender-atp/controlled-folders.md
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@ -1,5 +1,5 @@
--- ---
title: Prevent ransomware and threats from encrypting and changing files title: Protect important folders from ransomware from encrypting your files with controlled folder access
description: Files in default folders can be protected from being changed by malicious apps. Prevent ransomware from encrypting your files. description: Files in default folders can be protected from being changed by malicious apps. Prevent ransomware from encrypting your files.
keywords: controlled folder access, windows 10, windows defender, ransomware, protect, files, folders keywords: controlled folder access, windows 10, windows defender, ransomware, protect, files, folders
search.product: eADQiWindows 10XVcnh search.product: eADQiWindows 10XVcnh
@ -11,7 +11,7 @@ ms.localizationpriority: medium
author: denisebmsft author: denisebmsft
ms.author: deniseb ms.author: deniseb
audience: ITPro audience: ITPro
ms.date: 12/17/2020 ms.date: 02/03/2021
ms.reviewer: v-maave ms.reviewer: v-maave
manager: dansimp manager: dansimp
ms.custom: asr ms.custom: asr
@ -35,6 +35,9 @@ Controlled folder access helps protect your valuable data from malicious apps an
Controlled folder access works best with [Microsoft Defender for Endpoint](../microsoft-defender-atp/microsoft-defender-advanced-threat-protection.md), which gives you detailed reporting into controlled folder access events and blocks as part of the usual [alert investigation scenarios](../microsoft-defender-atp/investigate-alerts.md). Controlled folder access works best with [Microsoft Defender for Endpoint](../microsoft-defender-atp/microsoft-defender-advanced-threat-protection.md), which gives you detailed reporting into controlled folder access events and blocks as part of the usual [alert investigation scenarios](../microsoft-defender-atp/investigate-alerts.md).
> [!TIP]
> Controlled folder access blocks don't generate alerts in the [Alerts queue](../microsoft-defender-atp/alerts-queue.md). However, you can view information about controlled folder access blocks in the [device timeline view](../microsoft-defender-atp/investigate-machines.md), while using [advanced hunting](../microsoft-defender-atp/advanced-hunting-overview.md), or with [custom detection rules](../microsoft-defender-atp/custom-detection-rules.md).
## How does controlled folder access work? ## How does controlled folder access work?
Controlled folder access works by only allowing trusted apps to access protected folders. Protected folders are specified when controlled folder access is configured. Typically, commonly used folders, such as those used for documents, pictures, downloads, and so on, are included in the list of controlled folders. Controlled folder access works by only allowing trusted apps to access protected folders. Protected folders are specified when controlled folder access is configured. Typically, commonly used folders, such as those used for documents, pictures, downloads, and so on, are included in the list of controlled folders.
@ -43,7 +46,7 @@ Controlled folder access works with a list of trusted apps. If an app is include
Apps are added to the list based upon their prevalence and reputation. Apps that are highly prevalent throughout your organization and that have never displayed any behavior deemed malicious are considered trustworthy. Those apps are added to the list automatically. Apps are added to the list based upon their prevalence and reputation. Apps that are highly prevalent throughout your organization and that have never displayed any behavior deemed malicious are considered trustworthy. Those apps are added to the list automatically.
Apps can also be added manually to the trusted list by using Configuration Manager or Intune. Additional actions, such as [adding a file indicator](../microsoft-defender-atp/respond-file-alerts.md#add-indicator-to-block-or-allow-a-file) for an app, can be performed from the Security Center Console. Apps can also be added manually to the trusted list by using Configuration Manager or Intune. Additional actions, such as [adding a file indicator](../microsoft-defender-atp/respond-file-alerts.md#add-indicator-to-block-or-allow-a-file) for an app, can be performed from the Security Center Console.
## Why controlled folder access is important ## Why controlled folder access is important
@ -117,17 +120,11 @@ The following table shows events related to controlled folder access:
You can use the Windows Security app to view the list of folders that are protected by controlled folder access. You can use the Windows Security app to view the list of folders that are protected by controlled folder access.
1. On your Windows 10 device, open the Windows Security app. 1. On your Windows 10 device, open the Windows Security app.
2. Select **Virus & threat protection**. 2. Select **Virus & threat protection**.
3. Under **Ransomware protection**, select **Manage ransomware protection**. 3. Under **Ransomware protection**, select **Manage ransomware protection**.
4. If controlled folder access is turned off, you'll need to turn it on. Select **protected folders**. 4. If controlled folder access is turned off, you'll need to turn it on. Select **protected folders**.
5. Do one of the following steps: 5. Do one of the following steps:
- To add a folder, select **+ Add a protected folder**. - To add a folder, select **+ Add a protected folder**.
- To remove a folder, select it, and then select **Remove**. - To remove a folder, select it, and then select **Remove**.
> [!NOTE] > [!NOTE]