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---
title: Available Microsoft Defender SmartScreen Group Policy and mobile device management (MDM) settings
description: A list of all available settings for Microsoft Defender SmartScreen using Group Policy and mobile device management (MDM) settings.
ms.prod: windows-client
author: vinaypamnani-msft
ms.localizationpriority: medium
ms.date: 05/31/2023
ms.reviewer:
manager: aaroncz
ms.author: vinpa
ms.technology: itpro-security
ms.topic: reference
appliesto:
- ✅ <a href="https://learn.microsoft.com/windows/release-health/supported-versions-windows-client" target="_blank">Windows 11</a>
- ✅ <a href="https://learn.microsoft.com/windows/release-health/supported-versions-windows-client" target="_blank">Windows 10</a>
---
# Available Microsoft Defender SmartScreen Group Policy and mobile device management (MDM) settings
Microsoft Defender SmartScreen works with Intune, Group Policy, and mobile device management (MDM) settings to help you manage your organization's computer settings. Based on how you set up Microsoft Defender SmartScreen, you can show employees a warning page and let them continue to the site, or you can block the site entirely.
See [Windows 10 and Windows 11 settings to protect devices using Intune](/intune/endpoint-protection-windows-10#windows-defender-smartscreen-settings) for the controls you can use in Intune.
## Group Policy settings
SmartScreen uses registry-based Administrative Template policy settings.
Setting|Supported on|Description|
|--- |--- |--- |
|**Windows 10, version 2004:** Administrative Templates\Windows Components\Windows Defender SmartScreen\Explorer\Configure Windows Defender SmartScreen|**Windows 10, version 1703:** Administrative Templates\Windows Components\Windows Defender SmartScreen\Explorer\Configure Windows Defender SmartScreen<br/><br/>**Windows 10, Version 1607 and earlier:** Administrative Templates\Windows Components\File Explorer\Configure Windows SmartScreen<br/><br/>**At least Windows Server 2012, Windows 8 or Windows RT**|This policy setting turns on Microsoft Defender SmartScreen. <br/><br/>If you enable this setting, it turns on Microsoft Defender SmartScreen and your employees are unable to turn it off. Additionally, when enabling this feature, you must also pick whether Microsoft Defender SmartScreen should Warn your employees or Warn and prevent bypassing the message (effectively blocking the employee from the site).<br/><br/>If you disable this setting, it turns off Microsoft Defender SmartScreen and your employees are unable to turn it on. <br/><br/>If you don't configure this setting, your employees can decide whether to use Microsoft Defender SmartScreen.|
|**Windows 10, version 2004:** Administrative Templates\Windows Components\Windows Defender SmartScreen\Explorer\Configure App Install Control|**Windows 10, version 1703:** Administrative Templates\Windows Components\Windows Defender SmartScreen\Explorer\Configure App Install Control|This policy setting is intended to prevent malicious content from affecting your user's devices when downloading executable content from the internet.<br/><br/>This setting doesn't protect against malicious content from USB devices, network shares, or other non-internet sources.<br/><br/>**Important:** Using a trustworthy browser helps ensure that these protections work as expected.|
|**Windows 10, version 2004:** Administrative Templates\Windows Components\Windows Defender SmartScreen\Microsoft Edge\Configure Windows Defender SmartScreen (Microsoft Edge version 45 and earlier)<br/><br/>Administrative Templates\Microsoft Edge\SmartScreen settings\Configure Microsoft Defender SmartScreen (Microsoft Edge version 77 or later)<br/><br/>**Windows 10, version 1703:** Administrative Templates\Windows Components\Windows Defender SmartScreen\Microsoft Edge\Configure Windows Defender SmartScreen (Microsoft Edge version 45 and earlier)<br/><br/>Administrative Templates\Microsoft Edge\SmartScreen settings\Configure Microsoft Defender SmartScreen (Microsoft Edge version 77 or later)<br/><br/>**Windows 10, Version 1607 and earlier:** Administrative Templates\Windows Components\Microsoft Edge\Configure Windows SmartScreen|Microsoft Edge on Windows 10 or Windows 11|This policy setting turns on Microsoft Defender SmartScreen. <br/><br/>If you enable this setting, it turns on Microsoft Defender SmartScreen and your employees are unable to turn it off.<br/><br/>If you disable this setting, it turns off Microsoft Defender SmartScreen and your employees are unable to turn it on. <br/><br/>If you don't configure this setting, your employees can decide whether to use Microsoft Defender SmartScreen.|
|**Windows 10, version 2004:** Administrative Templates\Windows Components\Windows Defender SmartScreen\Microsoft Edge\Prevent bypassing Windows Defender SmartScreen prompts for files (Microsoft Edge version 45 and earlier)<br/><br/>Administrative Templates\Microsoft Edge\SmartScreen settings\Prevent bypassing of Microsoft Defender SmartScreen warnings about downloads (Microsoft Edge version 77 or later)<br/><br/>**Windows 10, version 1703:** Administrative Templates\Windows Components\Windows Defender SmartScreen\Microsoft Edge\Prevent bypassing Windows Defender SmartScreen prompts for files (Microsoft Edge version 45 and earlier)<br/><br/>Administrative Templates\Microsoft Edge\SmartScreen settings\Prevent bypassing of Microsoft Defender SmartScreen warnings about downloads (Microsoft Edge version 77 or later)<br/><br/>**Windows 10, Version 1511 and 1607:** Administrative Templates\Windows Components\Microsoft Edge\Prevent bypassing Windows SmartScreen prompts for files|Microsoft Edge on Windows 10, version 1511 or later|This policy setting stops employees from bypassing the Microsoft Defender SmartScreen warnings about potentially malicious files.<br/><br/>If you enable this setting, it stops employees from bypassing the warning, stopping the file download.<br/><br/>If you disable or don't configure this setting, your employees can bypass the warnings and continue to download potentially malicious files.|
|**Windows 10, version 2004:** Administrative Templates\Windows Components\Windows Defender SmartScreen\Microsoft Edge\Prevent bypassing Windows Defender SmartScreen prompts for sites (Microsoft Edge version 45 and earlier)<br/><br/>Administrative Templates\Microsoft Edge\SmartScreen settings\Prevent bypassing Microsoft Defender SmartScreen prompts for sites (Microsoft Edge version 77 or later)<br/><br/>**Windows 10, version 1703:** Administrative Templates\Windows Components\Windows Defender SmartScreen\Microsoft Edge\Prevent bypassing Windows Defender SmartScreen prompts for sites (Microsoft Edge version 45 and earlier)<br/><br/>Administrative Templates\Microsoft Edge\SmartScreen settings\Prevent bypassing Microsoft Defender SmartScreen prompts for sites (Microsoft Edge version 77 or later)<br/><br/>**Windows 10, Version 1511 and 1607:** Administrative Templates\Windows Components\Microsoft Edge\Prevent bypassing Windows SmartScreen prompts for sites|Microsoft Edge on Windows 10, version 1511 or later|This policy setting stops employees from bypassing the Microsoft Defender SmartScreen warnings about potentially malicious sites.<br/><br/>If you enable this setting, it stops employees from bypassing the warning, stopping them from going to the site.<br/><br/>If you disable or don't configure this setting, your employees can bypass the warnings and continue to visit a potentially malicious site.|
|Administrative Templates\Windows Components\Internet Explorer\Prevent managing SmartScreen Filter|Internet Explorer 9 or later|This policy setting prevents the employee from managing Microsoft Defender SmartScreen.<br/><br/>If you enable this policy setting, the employee isn't prompted to turn on Microsoft Defender SmartScreen. All website addresses that aren't on the filter's allowlist are sent automatically to Microsoft without prompting the employee.<br/><br/>If you disable or don't configure this policy setting, the employee is prompted to decide whether to turn on Microsoft Defender SmartScreen during the first-run experience.|
|Administrative Templates\Windows Components\Internet Explorer\Prevent bypassing SmartScreen Filter warnings|Internet Explorer 8 or later|This policy setting determines whether an employee can bypass warnings from Microsoft Defender SmartScreen.<br/><br/>If you enable this policy setting, Microsoft Defender SmartScreen warnings block the employee.<br/><br/>If you disable or don't configure this policy setting, the employee can bypass Microsoft Defender SmartScreen warnings.|
|Administrative Templates\Windows Components\Internet Explorer\Prevent bypassing SmartScreen Filter warnings about files that aren't commonly downloaded from the Internet|Internet Explorer 9 or later|This policy setting determines whether the employee can bypass warnings from Microsoft Defender SmartScreen. Microsoft Defender SmartScreen warns the employee about executable files that Internet Explorer users don't commonly download from the Internet.<br/><br/>If you enable this policy setting, Microsoft Defender SmartScreen warnings block the employee.<br/><br/>If you disable or don't configure this policy setting, the employee can bypass Microsoft Defender SmartScreen warnings.|
## MDM settings
If you manage your policies using Microsoft Intune, use these MDM policy settings. All settings support desktop computers running Windows 10/11 Pro or Windows 10/11 Enterprise, enrolled with Microsoft Intune.
For Microsoft Defender SmartScreen Edge MDM policies, see [Policy CSP - Browser](/windows/client-management/mdm/policy-csp-browser).
|Setting|Supported versions|Details|
|--- |--- |--- |
|AllowSmartScreen|Windows 10|<li>**URI full path.** ./Vendor/MSFT/Policy/Config/Browser/AllowSmartScreen<li>**Data type.** Integer<li>**Allowed values:**<ul><li>**0 .** Turns off Microsoft Defender SmartScreen in Microsoft Edge.<li>**1.** Turns on Microsoft Defender SmartScreen in Microsoft Edge.|
|EnableAppInstallControl|Windows 10, version 1703|<li>**URI full path.** ./Vendor/MSFT/Policy/Config/SmartScreen/EnableAppInstallControl<li>**Data type.** Integer<li>**Allowed values:**<ul><li>**0 .** Turns off Application Installation Control, allowing users to download and install files from anywhere on the web.<li>**1.** Turns on Application Installation Control, allowing users to install apps from the Microsoft Store only.|
|EnableSmartScreenInShell|Windows 10, version 1703|<li>**URI full path.** ./Vendor/MSFT/Policy/Config/SmartScreen/EnableSmartScreenInShell<li>**Data type.** Integer<li>**Allowed values:**<ul><li>**0 .** Turns off Microsoft Defender SmartScreen in Windows for app and file execution.<li>**1.** Turns on Microsoft Defender SmartScreen in Windows for app and file execution.|
|PreventOverrideForFilesInShell|Windows 10, version 1703|<li>**URI full path.** ./Vendor/MSFT/Policy/Config/SmartScreen/PreventOverrideForFilesInShell<li>**Data type.** Integer<li>**Allowed values:**<ul><li>**0 .** Employees can ignore Microsoft Defender SmartScreen warnings and run malicious files.<li>**1.** Employees can't ignore Microsoft Defender SmartScreen warnings and run malicious files.|
|PreventSmartScreenPromptOverride|Windows 10, Version 1511 and Windows 11|<li>**URI full path.** ./Vendor/MSFT/Policy/Config/Browser/PreventSmartscreenPromptOverride<li>**Data type.** Integer<li>**Allowed values:**<ul><li>**0 .** Employees can ignore Microsoft Defender SmartScreen warnings.<li>**1.** Employees can't ignore Microsoft Defender SmartScreen warnings.|
|PreventSmartScreenPromptOverrideForFiles|Windows 10, Version 1511 and Windows 11|<li>**URI full path.** ./Vendor/MSFT/Policy/Config/Browser/PreventSmartScreenPromptOverrideForFiles<li>**Data type.** Integer<li>**Allowed values:**<ul><li>**0 .** Employees can ignore Microsoft Defender SmartScreen warnings for files.<li>**1.** Employees can't ignore Microsoft Defender SmartScreen warnings for files.|
## Recommended Group Policy and MDM settings for your organization
By default, Microsoft Defender SmartScreen lets employees bypass warnings. Unfortunately, this feature can let employees continue to an unsafe site or to continue to download an unsafe file, even after being warned. Because of this possibility, we strongly recommend that you set up Microsoft Defender SmartScreen to block high-risk interactions instead of providing just a warning.
To better help you protect your organization, we recommend turning on and using these specific Microsoft Defender SmartScreen Group Policy and MDM settings.
|Group Policy setting|Recommendation|
|--- |--- |
|Administrative Templates\Windows Components\Microsoft Edge\Configure Windows Defender SmartScreen (Microsoft Edge version 45 and earlier)<br/><br/>Administrative Templates\Microsoft Edge\SmartScreen settings\Configure Microsoft Defender SmartScreen (Microsoft Edge version 77 or later)|**Enable.** Turns on Microsoft Defender SmartScreen.|
|Administrative Templates\Windows Components\Microsoft Edge\Prevent bypassing Windows Defender SmartScreen prompts for sites (Microsoft Edge version 45 and earlier)<br/><br/>Administrative Templates\Microsoft Edge\SmartScreen settings\Prevent bypassing Windows Defender SmartScreen prompts for sites (Microsoft Edge version 77 or later)|**Enable.** Stops employees from ignoring warning messages and continuing to a potentially malicious website.|
|Administrative Templates\Windows Components\Microsoft Edge\Prevent bypassing Windows Defender SmartScreen prompts for files (Microsoft Edge version 45 and earlier)<br/><br/>Administrative Templates\Microsoft Edge\SmartScreen settings\Prevent bypassing of Microsoft Defender SmartScreen warnings about downloads (Microsoft Edge version 77 or later)|**Enable.** Stops employees from ignoring warning messages and continuing to download potentially malicious files.|
|Administrative Templates\Windows Components\File Explorer\Configure Windows Defender SmartScreen|**Enable with the Warn and prevent bypass option.** Stops employees from ignoring warning messages about malicious files downloaded from the Internet.|
|MDM setting|Recommendation|
|--- |--- |
|Browser/AllowSmartScreen|**1.** Turns on Microsoft Defender SmartScreen.|
|Browser/PreventSmartScreenPromptOverride|**1.** Stops employees from ignoring warning messages and continuing to a potentially malicious website.|
|Browser/PreventSmartScreenPromptOverrideForFiles|**1.** Stops employees from ignoring warning messages and continuing to download potentially malicious files.|
|SmartScreen/EnableSmartScreenInShell|**1.** Turns on Microsoft Defender SmartScreen in Windows.<br/><br/>Requires at least Windows 10, version 1703.|
|SmartScreen/PreventOverrideForFilesInShell|**1.** Stops employees from ignoring warning messages about malicious files downloaded from the Internet.<br/><br/>Requires at least Windows 10, version 1703.|
## Related articles
- [Available Group Policy and Mobile Device Management (MDM) settings for Microsoft Edge](/microsoft-edge/deploy/available-policies)

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---
title: Enhanced Phishing Protection in Microsoft Defender SmartScreen
description: Learn how Enhanced Phishing Protection for Microsoft Defender SmartScreen helps protect Microsoft school or work passwords against phishing and unsafe usage on sites and apps.
ms.prod: windows-client
ms.technology: itpro-security
author: vinaypamnani-msft
ms.author: vinpa
ms.reviewer: paoloma
manager: aaroncz
ms.localizationpriority: medium
ms.date: 05/31/2023
adobe-target: true
appliesto:
- ✅ <a href="https://learn.microsoft.com/windows/release-health/supported-versions-windows-client" target="_blank">Windows 11, version 22H2</a>
ms.topic: conceptual
---
# Enhanced Phishing Protection in Microsoft Defender SmartScreen
Starting in Windows 11, version 22H2, Enhanced Phishing Protection in Microsoft Defender SmartScreen helps protect Microsoft school or work passwords against phishing and unsafe usage on sites and apps.
If a user signs into Windows using a password, Enhanced Phishing Protection works alongside Windows security protections, and helps protect typed work or school password used to sign into Windows 11 in these ways:
- If users type their work or school password on any Chromium browser, into a site deemed malicious by Microsoft Defender SmartScreen, Enhanced Phishing Protection alerts them. It also prompts them to change their password so attackers can't gain access to their account.
- Reusing work or school passwords makes it easy for attackers who compromise a user's password to gain access to their other accounts. Enhanced Phishing Protection can warn users if they reuse their work or school Microsoft account password on sites and apps and prompt them to change their password.
- Since it's unsafe to store plaintext passwords in text editors, Enhanced Phishing Protection can warn users if they store their work or school password in Notepad, Word, or any Microsoft 365 Office app, and recommends they delete their password from the file.
> [!NOTE]
> When a user signs-in to a device using a Windows Hello for Business PIN or biometric, Enhanced Phishing Protection does not alert the user or send events to Microsoft Defender for Endpoint.
## Benefits of Enhanced Phishing Protection in Microsoft Defender SmartScreen
Enhanced Phishing Protection provides robust phishing protections for work or school passwords that are used to sign into Windows 11. The benefits of Enhanced Phishing Protection are:
- **Anti-phishing support:** Phishing attacks trick users through convincing imitations of safe content or through credential harvesting content hosted inside trusted sites and applications. Enhanced Phishing Protection helps protect users from reported phishing sites by evaluating the URLs a site or app is connecting to, along with other characteristics, to determine if they're known to distribute or host unsafe content.
- **Secure operating system integration:** Enhanced Phishing Protection is integrated directly into the Windows 11 operating system, so it can understand users' password entry context (including process connections, URLs, certificate information) in any browser or app. Because Enhanced Phishing Protection has unparalleled insight into what is happening at the OS level, it can identify when users type their work or school password unsafely. If users do use their work or school password unsafely, the feature empowers users to change their password to minimize chances of their compromised credential being weaponized against them.
- **Unparalleled telemetry shared throughout Microsoft's security suite:** Enhanced Phishing Protection is constantly learning from phishing attacks seen throughout the entire Microsoft security stack. It works alongside other Microsoft security products, to provide a layered approach to password security, especially for organizations early in their password-less authentication journey. If your organization uses Microsoft Defender for Endpoint, you can see valuable phishing sensors data in the Microsoft 365 Defender Portal. This portal lets you view Enhanced Phishing Protection alerts and reports for unsafe password usage in your environment.
- **Easy management through Group Policy and Microsoft Intune:** Enhanced Phishing Protection works with Group Policy and mobile device management (MDM) settings to help you manage your organization's computer settings. Based on how you set up Enhanced Phishing Protection, you can customize which phishing protection scenarios show users warning dialogs. For example, the Service Enabled setting determines whether the Enhanced Phishing Protection service is on or off. The feature is in audit mode if the other settings, which correspond to notification policies, aren't enabled.
[!INCLUDE [enhanced-phishing-protection-with-smartscreen](../../../../includes/licensing/enhanced-phishing-protection-with-smartscreen.md)]
## Configure Enhanced Phishing Protection for your organization
Enhanced Phishing Protection can be configured via Microsoft Intune, Group Policy Objects (GPO) or Configuration Service Providers (CSP) with an MDM service. Follow these instructions to configure your devices using either Microsoft Intune, GPO or CSP.
#### [:::image type="icon" source="images/icons/intune.svg"::: **Intune**](#tab/intune)
To configure devices using Microsoft Intune, create a [**Settings catalog** policy][MEM-2], and use the settings listed under the category **`SmartScreen > Enhanced Phishing Protection`**:
|Setting|Description|
|---------|---------|
|Service Enabled |This policy setting determines whether Enhanced Phishing Protection is in audit mode or off. Users don't see any notifications for any protection scenarios when Enhanced Phishing Protection is in audit mode. In audit mode, Enhanced Phishing Protection captures unsafe password entry events and sends diagnostic data through Microsoft Defender.<li> If you enable or don't configure this setting, Enhanced Phishing Protection is enabled in audit mode, preventing users to turn it off.</li><li> If you disable this policy setting, Enhanced Phishing Protection is off. When off, Enhanced Phishing Protection doesn't capture events, send data, or notify users. Additionally, your users are unable to turn it on.</li>|
|Notify Malicious|This policy setting determines whether Enhanced Phishing Protection warns your users if they type their work or school password into one of the following malicious scenarios: into a reported phishing site, into a sign-in URL with an invalid certificate, or into an application connecting to either a reported phishing site or a sign-in URL with an invalid certificate<li> If you enable this policy setting, Enhanced Phishing Protection warns your users if they type their work or school password into one of the malicious scenarios described above and encourages them to change their password.</li><li> If you disable or don't configure this policy setting, Enhanced Phishing Protection doesn't warn users if they type their work or school password into one of the malicious scenarios described above.|
|Notify Password Reuse |This policy setting determines whether Enhanced Phishing Protection warns your users if they reuse their work or school password.<li> If you enable this policy setting, Enhanced Phishing Protection warns users if they reuse their work or school password and encourages them to change it.</li><li> If you disable or don't configure this policy setting, Enhanced Phishing Protection doesn't warn users if they reuse their work or school password.|
|Notify Unsafe App|This policy setting determines whether Enhanced Phishing Protection warns your users if they type their work or school passwords in Notepad or Microsoft 365 Office Apps.<li> If you enable this policy setting, Enhanced Phishing Protection warns your users if they store their password in Notepad or Microsoft 365 Office Apps.</li><li> If you disable or don't configure this policy setting, Enhanced Phishing Protection doesn't warn users if they store their password in Notepad or Microsoft 365 Office Apps.|
Assign the policy to a security group that contains as members the devices or users that you want to configure.
#### [:::image type="icon" source="images/icons/group-policy.svg"::: **GPO**](#tab/gpo)
Enhanced Phishing Protection can be configured using the following Administrative Templates policy settings:
|Setting|Description|
|---------|---------|
|Administrative Templates\Windows Components\Windows Defender SmartScreen\Enhanced Phishing Protection\Service Enabled |This policy setting determines whether Enhanced Phishing Protection is in audit mode or off. Users don't see any notifications for any protection scenarios when Enhanced Phishing Protection is in audit mode. In audit mode, Enhanced Phishing Protection captures unsafe password entry events and sends diagnostic data through Microsoft Defender.<li> If you enable or don't configure this setting, Enhanced Phishing Protection is enabled in audit mode, preventing users to turn it off.</li><li> If you disable this policy setting, Enhanced Phishing Protection is off. When off, Enhanced Phishing Protection doesn't capture events, send data, or notify users. Additionally, your users are unable to turn it on.</li>|
|Administrative Templates\Windows Components\Windows Defender SmartScreen\Enhanced Phishing Protection\Notify Malicious|This policy setting determines whether Enhanced Phishing Protection warns your users if they type their work or school password into one of the following malicious scenarios: into a reported phishing site, into a sign-in URL with an invalid certificate, or into an application connecting to either a reported phishing site or a sign-in URL with an invalid certificate<li> If you enable this policy setting, Enhanced Phishing Protection warns your users if they type their work or school password into one of the malicious scenarios described above and encourages them to change their password.</li><li> If you disable or don't configure this policy setting, Enhanced Phishing Protection doesn't warn users if they type their work or school password into one of the malicious scenarios described above.|
|Administrative Templates\Windows Components\Windows Defender SmartScreen\Enhanced Phishing Protection\Notify Password Reuse |This policy setting determines whether Enhanced Phishing Protection warns your users if they reuse their work or school password.<li> If you enable this policy setting, Enhanced Phishing Protection warns users if they reuse their work or school password and encourages them to change it.</li><li> If you disable or don't configure this policy setting, Enhanced Phishing Protection doesn't warn users if they reuse their work or school password.|
|Administrative Templates\Windows Components\Windows Defender SmartScreen\Enhanced Phishing Protection\Notify Unsafe App|This policy setting determines whether Enhanced Phishing Protection warns your users if they type their work or school passwords in Notepad or Microsoft 365 Office Apps.<li> If you enable this policy setting, Enhanced Phishing Protection warns your users if they store their password in Notepad or Microsoft 365 Office Apps.</li><li> If you disable or don't configure this policy setting, Enhanced Phishing Protection doesn't warn users if they store their password in Notepad or Microsoft 365 Office Apps.|
#### [:::image type="icon" source="images/icons/windows-os.svg"::: **CSP**](#tab/csp)
Enhanced Phishing Protection can be configured using the [WebThreatDefense CSP][WIN-1].
| Setting | OMA-URI | Data type |
|-------------------------|---------------------------------------------------------------------------|-----------|
| **ServiceEnabled** | `./Device/Vendor/MSFT/Policy/Config/WebThreatDefense/ServiceEnabled` | Integer |
| **NotifyMalicious** | `./Device/Vendor/MSFT/Policy/Config/WebThreatDefense/NotifyMalicious` | Integer |
| **NotifyPasswordReuse** | `./Device/Vendor/MSFT/Policy/Config/WebThreatDefense/NotifyPasswordReuse` | Integer |
| **NotifyUnsafeApp** | `./Device/Vendor/MSFT/Policy/Config/WebThreatDefense/NotifyUnsafeApp` | Integer |
---
### Recommended settings for your organization
By default, Enhanced Phishing Protection is deployed in audit mode, preventing notifications to the users for any protection scenarios. In audit mode, Enhanced Phishing Protection captures unsafe password entry events and sends diagnostic data through Microsoft Defender. Users aren't warned if they enter their work or school password into a phishing site, if they reuse their password, or if they unsafely store their password in applications. Because of this possibility, it's recommended that you configure Enhanced Phishing Protection to warn users during all protection scenarios.
To better help you protect your organization, we recommend turning on and using these specific Microsoft Defender SmartScreen settings.
#### [:::image type="icon" source="images/icons/intune.svg"::: **Intune**](#tab/intune)
|Settings catalog element|Recommendation|
|---------|---------|
|Service Enabled|**Enable**: Turns on Enhanced Phishing Protection in audit mode, which captures work or school password entry events and sends diagnostic data but doesn't show any notifications to your users.|
|Notify Malicious|**Enable**: Turns on Enhanced Phishing Protection notifications when users type their work or school password into one of the previously described malicious scenarios and encourages them to change their password.|
|Notify Password Reuse|**Enable**: Turns on Enhanced Phishing Protection notifications when users reuse their work or school password and encourages them to change their password.|
|Notify Unsafe App|**Enable**: Turns on Enhanced Phishing Protection notifications when users type their work or school passwords in Notepad and Microsoft 365 Office Apps.|
#### [:::image type="icon" source="images/icons/group-policy.svg"::: **GPO**](#tab/gpo)
|Group Policy setting|Recommendation|
|---------|---------|
|Administrative Templates\Windows Components\Windows Defender SmartScreen\Enhanced Phishing Protection\Service Enabled| **Enable**: Enhanced Phishing Protection is enabled in audit mode and your users are unable to turn it off.|
|Administrative Templates\Windows Components\Windows Defender SmartScreen\Enhanced Phishing Protection\Notify Malicious|**Enable**: Enhanced Phishing Protection warns your users if they type their work or school password into one of the following malicious scenarios: into a reported phishing site, into a sign-in URL with an invalid certificate, or into an application connecting to either a reported phishing site or a sign-in URL with an invalid certificate. It encourages users to change their password.|
|Administrative Templates\Windows Components\Windows Defender SmartScreen\Enhanced Phishing Protection\Notify Password Reuse|**Enable**: Enhanced Phishing Protection warns users if they reuse their work or school password and encourages them to change it.|
|Administrative Templates\Windows Components\Windows Defender SmartScreen\Enhanced Phishing Protection\Notify Unsafe App|**Enable**: Enhanced Phishing Protection warns users if they store their password in Notepad and Microsoft 365 Office Apps.|
#### [:::image type="icon" source="images/icons/windows-os.svg"::: **CSP**](#tab/csp)
|MDM setting|Recommendation|
|---------|---------|
|ServiceEnabled|**1**: Turns on Enhanced Phishing Protection in audit mode, which captures work or school password entry events and sends diagnostic data but doesn't show any notifications to your users.|
|NotifyMalicious|**1**: Turns on Enhanced Phishing Protection notifications when users type their work or school password into one of the previously described malicious scenarios and encourages them to change their password.|
|NotifyPasswordReuse|**1**: Turns on Enhanced Phishing Protection notifications when users reuse their work or school password and encourages them to change their password.|
|NotifyUnsafeApp|**1**: Turns on Enhanced Phishing Protection notifications when users type their work or school passwords in Notepad and Microsoft 365 Office Apps.|
---
## Related articles
- [SmartScreen Frequently Asked Questions](https://fb.smartscreen.microsoft.com/smartscreenfaq.aspx)
- [WebThreatDefense CSP][WIN-1]
- [Threat protection](../index.md)
<!-- Links -->
[WIN-1]: /windows/client-management/mdm/policy-csp-webthreatdefense
[MEM-2]: /mem/intune/configuration/settings-catalog

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---
title: Microsoft Defender SmartScreen overview
description: Learn how Microsoft Defender SmartScreen protects against phishing or malware websites and applications, and the downloading of potentially malicious files.
ms.prod: windows-client
author: vinaypamnani-msft
ms.author: vinpa
ms.localizationpriority: high
ms.reviewer:
manager: aaroncz
ms.technology: itpro-security
adobe-target: true
ms.collection:
- tier2
- highpri
ms.date: 05/31/2023
ms.topic: article
appliesto:
- ✅ <a href="https://learn.microsoft.com/windows/release-health/supported-versions-windows-client" target="_blank">Windows 11</a>
- ✅ <a href="https://learn.microsoft.com/windows/release-health/supported-versions-windows-client" target="_blank">Windows 10</a>
- ✅ <a href="https://learn.microsoft.com/deployedge/microsoft-edge-support-lifecycle" target="_blank">Microsoft Edge</a>
---
# Microsoft Defender SmartScreen
Microsoft Defender SmartScreen protects against phishing or malware websites and applications, and the downloading of potentially malicious files.
**Microsoft Defender SmartScreen determines whether a site is potentially malicious by:**
- Analyzing visited webpages and looking for indications of suspicious behavior. If Microsoft Defender SmartScreen determines that a page is suspicious, it shows a warning page to advise caution.
- Checking the visited sites against a dynamic list of reported phishing sites and malicious software sites. If it finds a match, Microsoft Defender SmartScreen shows a warning to let the user know that the site might be malicious.
**Microsoft Defender SmartScreen determines whether a downloaded app or app installer is potentially malicious by:**
- Checking downloaded files against a list of reported malicious software sites and programs known to be unsafe. If it finds a match, Microsoft Defender SmartScreen shows a warning to let the user know that the site might be malicious.
- Checking downloaded files against a list of files that are well known and downloaded frequently. If the file isn't on that list, Microsoft Defender SmartScreen shows a warning, advising caution.
## Benefits of Microsoft Defender SmartScreen
Microsoft Defender SmartScreen provide an early warning system against websites that might engage in phishing attacks or attempt to distribute malware through a socially engineered attack. The primary benefits are:
- **Anti-phishing and anti-malware support:** Microsoft Defender SmartScreen helps to protect users from sites that are reported to host phishing attacks or attempt to distribute malicious software. It can also help protect against deceptive advertisements, scam sites, and drive-by attacks. Drive-by attacks are web-based attacks that tend to start on a trusted site, targeting security vulnerabilities in commonly used software. Because drive-by attacks can happen even if the user doesn't select or download anything on the page, the danger often goes unnoticed. For more information about drive-by attacks, see [Evolving Microsoft Defender SmartScreen to protect you from drive-by attacks](https://blogs.windows.com/msedgedev/2015/12/16/SmartScreen-drive-by-improvements/).
- **Reputation-based URL and app protection:** Microsoft Defender SmartScreen evaluates a website's URLs to determine if they're known to distribute or host unsafe content. It also provides reputation checks for apps, checking downloaded programs and the digital signature used to sign a file. If a URL, a file, an app, or a certificate has an established reputation, users don't see any warnings. If there's no reputation, the item is marked as a higher risk and presents a warning to the user.
- **Operating system integration:** Microsoft Defender SmartScreen is integrated into the Windows 10 operating system. It checks any files an app (including 3rd-party browsers and email clients) that attempts to download and run.
- **Improved heuristics and diagnostic data:** Microsoft Defender SmartScreen is constantly learning and endeavoring to stay up to date, so it can help to protect you against potentially malicious sites and files.
- **Management through group policy and Microsoft Intune:** Microsoft Defender SmartScreen supports using both group policy and Microsoft Intune settings. For more info about all available settings, see [Available Microsoft Defender SmartScreen group policy and mobile device management (MDM) settings](available-settings.md).
- **Blocking URLs associated with potentially unwanted applications:** In Microsoft Edge (based on Chromium), SmartScreen blocks URLs associated with potentially unwanted applications, or PUAs. For more information on blocking URLs associated with PUAs, see [Detect and block potentially unwanted applications](/microsoft-365/security/defender-endpoint/detect-block-potentially-unwanted-apps-microsoft-defender-antivirus).
> [!IMPORTANT]
> SmartScreen protects against malicious files from the internet. It does not protect against malicious files on internal locations or network shares, such as shared folders with UNC paths or SMB/CIFS shares.
[!INCLUDE [microsoft-defender-smartscreen](../../../../includes/licensing/microsoft-defender-smartscreen.md)]
## Submit files to Microsoft Defender SmartScreen for review
If you believe a warning or block was incorrectly shown for a file or application, or if you believe an undetected file is malware, you can [submit a file](https://www.microsoft.com/wdsi/filesubmission/) to Microsoft for review. For more information, see [Submit files for analysis](/microsoft-365/security/intelligence/submission-guide).
When submitting a file for Microsoft Defender SmartScreen, make sure to select **Microsoft Defender SmartScreen** from the product menu.
![Windows Security, Microsoft Defender SmartScreen controls.](images/Microsoft-defender-smartscreen-submission.png)
## Related articles
- [SmartScreen frequently asked questions](https://fb.smartscreen.microsoft.com/smartscreenfaq.aspx)
- [Configuration service provider reference](/windows/client-management/mdm/configuration-service-provider-reference)

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items:
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- name: Attack surface reduction (ASR)
href: /microsoft-365/security/defender-endpoint/attack-surface-reduction
- name: Tamper protection for MDE
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- name: Microsoft Vulnerable Driver Blocklist
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- name: Controlled folder access
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- name: Exploit protection
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- name: Exploit protection 🔗
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href: microsoft-defender-smartscreen/available-settings.md
- name: Enhanced Phishing Protection
href: microsoft-defender-smartscreen/enhanced-phishing-protection.md
- name: Microsoft Defender for Endpoint 🔗
href: /microsoft-365/security/defender-endpoint