defender application guard

Defender Application Guard is a Microsoft isolation technology that opens untrusted content in a disposable container, and this tag collects WindowsForum.com discussion of its lifecycle and dependencies. The most recent coverage centers on Microsoft Edge Stable 154, which is scheduled to drop both Microsoft Defender Application Guard and Windows Information Protection support around September 24, 2026. For administrators still running Windows 10, the practical concern is that the browser-side integrations stop functioning once the Edge rollout completes, leaving roughly a week to identify and replace those controls. Expect follow-up threads on migration planning, alternative isolation approaches, and enterprise deployment timelines.