- Aug 17, 2014
- 11,547
In late 2023, Microsoft deprecated Microsoft Defender Application Guard for Office, and one month later, the same thing happened to Microsoft Defender Application Guard for Edge. Now, the company has updated the official list of deprecated Windows features with new details about MDAG deprecation and related apps and browser extensions.
Although the feature is called Microsoft Defender Application Guard for Edge, it offers browser extensions for Chrome and Firefox. The idea is to track untrusted websites and redirect them from your current browser to an isolated Microsoft Edge window so you can browse with fewer security risks.
Because Application Guard is deprecated there will not be a migration to Edge Manifest V3. The corresponding extensions and associated Windows Store app will not be available after May 2024. This affects the following browsers:
If you want to block unprotected browsers until you are ready to retire MDAG usage in your enterprise, we recommend using AppLocker policies or Microsoft Edge management service. For more information, see Microsoft Edge and Microsoft Defender Application Guard.
- Application Guard Extension - Chrome.
- Application Guard Extension - Firefox.

Microsoft to discontinue Application Guard app and browser extensions in May 2024
Microsoft has updated the list of deprecated features with new details about Microsoft Defender Application Guard. The company plans to delist Application Guard app and all related extensions in May.
