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windows/security/threat-protection/microsoft-defender-antivirus/microsoft-defender-antivirus-compatibility.md
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---
title: Microsoft Defender Antivirus compatibility with other security products
description: Microsoft Defender Antivirus operates in different ways depending on what other security products you have installed, and the operating system you are using.
keywords: windows defender, atp, advanced threat protection, compatibility, passive mode
description: Get an overview of what to expect from Microsoft Defender Antivirus with other security products and the operating systems you are using.
keywords: windows defender, next-generation, atp, advanced threat protection, compatibility, passive mode
search.product: eADQiWindows 10XVcnh
ms.pagetype: security
ms.prod: w10
@ -11,7 +11,7 @@ ms.localizationpriority: medium
author: denisebmsft
ms.author: deniseb
ms.custom: nextgen
ms.reviewer: pahuijbr, shwjha
ms.reviewer: tewchen, pahuijbr, shwjha
manager: dansimp
ms.date: 01/11/2021
---
@ -66,7 +66,10 @@ See [Microsoft Defender Antivirus on Windows Server 2016 and 2019](microsoft-def
## Functionality and features available in each state
The following table summarizes the functionality and features that are available in each state:
The table in this section summarizes the functionality and features that are available in each state.
> [!IMPORTANT]
> The following table is informational, and it is designed to describe the features & capabilities that are turned on or off according to whether Microsoft Defender Antivirus is in Active mode, in Passive mode, or disabled/uninstalled. Do not turn off capabilities, such as real-time protection, if you are using Microsoft Defender Antivirus in passive mode or are using EDR in block mode.
|State |[Real-time protection](https://docs.microsoft.com/windows/security/threat-protection/microsoft-defender-antivirus/configure-real-time-protection-microsoft-defender-antivirus) and [cloud-delivered protection](https://docs.microsoft.com/windows/security/threat-protection/microsoft-defender-antivirus/enable-cloud-protection-microsoft-defender-antivirus) | [Limited periodic scanning availability](https://docs.microsoft.com/windows/security/threat-protection/microsoft-defender-antivirus/limited-periodic-scanning-microsoft-defender-antivirus) | [File scanning and detection information](https://docs.microsoft.com/windows/security/threat-protection/microsoft-defender-antivirus/customize-run-review-remediate-scans-microsoft-defender-antivirus) | [Threat remediation](https://docs.microsoft.com/windows/security/threat-protection/microsoft-defender-antivirus/configure-remediation-microsoft-defender-antivirus) | [Security intelligence updates](https://docs.microsoft.com/windows/security/threat-protection/microsoft-defender-antivirus/manage-updates-baselines-microsoft-defender-antivirus) |
|--|--|--|--|--|--|
@ -78,20 +81,20 @@ The following table summarizes the functionality and features that are available
- In Active mode, Microsoft Defender Antivirus is used as the antivirus app on the machine. All configuration made with Configuration Manager, Group Policy, Intune, or other management products will apply. Files are scanned and threats remediated, and detection information are reported in your configuration tool (such as Configuration Manager or the Microsoft Defender Antivirus app on the machine itself).
- In Passive mode, Microsoft Defender Antivirus is not used as the antivirus app, and threats are not remediated by Microsoft Defender Antivirus. Files are scanned and reports are provided for threat detections that are shared with the Microsoft Defender for Endpoint service. Therefore, you might encounter alerts in the Security Center console with Microsoft Defender Antivirus as a source, even when Microsoft Defender Antivirus is in Passive mode.
- When [EDR in block mode](../microsoft-defender-atp/edr-in-block-mode.md) is turned on and Microsoft Defender Antivirus is not the primary antivirus solution, it can still detect and remediate malicious items.
- When disabled, Microsoft Defender Antivirus is not used as the antivirus app. Files are not scanned and threats are not remediated.
- When disabled, Microsoft Defender Antivirus is not used as the antivirus app. Files are not scanned and threats are not remediated. Disabling/uninstalling Microsoft Defender Antivirus is not recommended.
## Keep the following points in mind
If you are enrolled in Microsoft Defender for Endpoint and you are using a third-party antimalware product, then passive mode is enabled. [The service requires common information sharing from Microsoft Defender Antivirus service](../microsoft-defender-atp/defender-compatibility.md) in order to properly monitor your devices and network for intrusion attempts and attacks.
- If you are enrolled in Microsoft Defender for Endpoint and you are using a third-party antimalware product, then passive mode is enabled. [The service requires common information sharing from Microsoft Defender Antivirus service](../microsoft-defender-atp/defender-compatibility.md) in order to properly monitor your devices and network for intrusion attempts and attacks.
When Microsoft Defender Antivirus is automatically disabled, it can automatically re-enabled if the protection offered by a third-party antivirus product expires or otherwise stops providing real-time protection from viruses, malware, or other threats. This is to ensure antivirus protection is maintained on the endpoint. It also allows you to enable [limited periodic scanning](limited-periodic-scanning-microsoft-defender-antivirus.md), which uses the Microsoft Defender Antivirus engine to periodically check for threats in addition to your main antivirus app.
- When Microsoft Defender Antivirus is disabled automatically, it can be re-enabled automatically if the protection offered by a non-Microsoft antivirus product expires or otherwise stops providing real-time protection from viruses, malware, or other threats. Automatic re-enabling helps to ensure that antivirus protection is maintained on your devices. It also allows you to enable [limited periodic scanning](limited-periodic-scanning-microsoft-defender-antivirus.md), which uses the Microsoft Defender Antivirus engine to periodically check for threats in addition to your main antivirus app.
In passive mode, you can still [manage updates for Microsoft Defender Antivirus](manage-updates-baselines-microsoft-defender-antivirus.md); however, you can't move Microsoft Defender Antivirus into the normal active mode if your endpoints have an up-to-date third-party product providing real-time protection from malware.
- When Microsoft Defender Antivirus is in passive mode, you can still [manage updates for Microsoft Defender Antivirus](manage-updates-baselines-microsoft-defender-antivirus.md); however, you can't move Microsoft Defender Antivirus into active mode if your devices have an up-to-date, non-Microsoft antivirus product providing real-time protection from malware.
If you uninstall the other product, and choose to use Microsoft Defender Antivirus to provide protection to your endpoints, Microsoft Defender Antivirus will automatically return to its normal active mode.
If you uninstall the non-Microsoft antivirus product, and use Microsoft Defender Antivirus to provide protection to your devices, Microsoft Defender Antivirus will return to its normal active mode automatically.
> [!WARNING]
> You should not attempt to disable, stop, or modify any of the associated services used by Microsoft Defender Antivirus, Microsoft Defender for Endpoint, or the Windows Security app. This includes the *wscsvc*, *SecurityHealthService*, *MsSense*, *Sense*, *WinDefend*, or *MsMpEng* services and process. Manually modifying these services can cause severe instability on your endpoints and open your network to infections and attacks. It can also cause problems when using third-party antivirus apps and how their information is displayed in the [Windows Security app](microsoft-defender-security-center-antivirus.md).
> Do not disable, stop, or modify any of the associated services that are used by Microsoft Defender Antivirus, Microsoft Defender for Endpoint, or the Windows Security app. This includes the *wscsvc*, *SecurityHealthService*, *MsSense*, *Sense*, *WinDefend*, or *MsMpEng* services and processes. Manually modifying these services can cause severe instability on your devices and can make your network vulnerable. Disabling, stopping, or modifying those services can also cause problems when using non-Microsoft antivirus solutions and how their information is displayed in the [Windows Security app](microsoft-defender-security-center-antivirus.md).
## See also
@ -100,5 +103,4 @@ If you uninstall the other product, and choose to use Microsoft Defender Antivir
- [Microsoft Defender Antivirus on Windows Server 2016 and 2019](microsoft-defender-antivirus-on-windows-server-2016.md)
- [EDR in block mode](../microsoft-defender-atp/edr-in-block-mode.md)
- [Configure Endpoint Protection](https://docs.microsoft.com/mem/configmgr/protect/deploy-use/endpoint-protection-configure)
- [Configure Endpoint Protection on a standalone client](https://docs.microsoft.com/mem/configmgr/protect/deploy-use/endpoint-protection-configure-standalone-client)
- [Learn about Microsoft 365 Endpoint data loss prevention](https://docs.microsoft.com/microsoft-365/compliance/endpoint-dlp-learn-about)