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installing steps

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Marty Hernandez Avedon 2020-06-30 10:15:59 -04:00
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windows/security/threat-protection/microsoft-defender-application-guard/md-app-guard-browser-extension.md
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---
title: Microsoft Defender Application Guard Extension
description: Learn about the Microsoft Defender Application Guard browser extension , which extends Application Guard's protection to third-party web browsers.
description: Learn about the Microsoft Defender Application Guard browser extension, which extends Application Guard's protection to more web browsers.
ms.prod: w10
ms.mktglfcycl: manage
ms.sitesec: library
@ -20,7 +20,7 @@ ms.custom: asr
- Windows 10
Microsoft Defender Application Guard Extension is a web browser add-on available for [Chrome](https://chrome.google.com/webstore/detail/application-guard-extensi/mfjnknhkkiafjajicegabkbimfhplplj/) and [Firefox](https://addons.mozilla.org/en-US/firefox/addon/application-guard-extension/).
[Microsoft Defender Application Guard Extension](https://www.microsoft.com/security/blog/2019/05/23/new-browser-extensions-for-integrating-microsofts-hardware-based-isolation/) is a web browser add-on available for [Chrome](https://chrome.google.com/webstore/detail/application-guard-extensi/mfjnknhkkiafjajicegabkbimfhplplj/) and [Firefox](https://addons.mozilla.org/en-US/firefox/addon/application-guard-extension/).
[Microsoft Defender Application Guard](md-app-guard-overview.md) provides Hyper-V isolation on Windows 10, to protect users from potentially harmful content on the web. The extension helps Application Guard protect users running other web browsers.
@ -37,9 +37,16 @@ Microsoft Defender Application Guard Extension works with the following editions
- Windows 10 Enterprise
- Windows 10 Education
Application Guard itself must be installed and enabled. It has its own set of [requirements](reqs-md-app-guard.md).
Application Guard itself is required for the extension to work. It has its own set of [requirements](reqs-md-app-guard.md). Check the Application Guard [installation guide](install-md-app-guard.md) for further steps, if you don't have it installed already.
The extension also requires the [Application Guard companion app](https://www.microsoft.com/p/windows-defender-application-guard-companion/9n8gnlc8z9c8?activetab=pivot:overviewtab). This companion app enables Application Guard to work with web browsers other than Microsoft Edge or Internet Explorer.
## Installing the extension
Enterprise administrators running Application Guard under [managed mode](install-md-app-guard#enterprise-managed-mode) can follow these recommended steps:
1. Define Application Guard's [network isolation settings](configure-md-app-guard#network-isolation-settings.md), so a set of enterprise sites is already in place.
1. On the local device, download and install the Application Guard extension for Google [Chrome](https://chrome.google.com/webstore/detail/application-guard-extensi/mfjnknhkkiafjajicegabkbimfhplplj/) and/or Mozilla [Firefox](https://addons.mozilla.org/en-US/firefox/addon/application-guard-extension/).
1. Install the [Windows Defender Application Guard companion app](https://www.microsoft.com/p/windows-defender-application-guard-companion/9n8gnlc8z9c8#activetab=pivot:overviewtab) from the Microsoft Store. This companion app enables Application Guard to work with web browsers other than Microsoft Edge or Internet Explorer.
1. Restart the device.
## Troubleshooting guide