Microsoft Ditches Defender Guard: Office’s Security Shakeup by 2027!
Microsoft plans to remove Defender Application Guard from Office by December 2027, prompting a collective sigh of relief from office documents everywhere. Instead, files will open in Protected View, keeping security tight and document edits looser than a goose. So, admins, no need for panic—just a tiny adjustment to your security settings.

Hot Take:
Ah, Microsoft, the master of the slow-motion breakup! They announced the deprecation of Defender Application Guard two years ago, and now they’re finally pulling the plug. But don’t worry, like a clingy ex, they’ve got alternatives ready to slide into your DMs. It’s like breaking up with a bodyguard only to hire a team of security ninjas instead.
Key Points:
- Microsoft Defender Application Guard (MDAG) will be removed from Office by December 2027.
- MDAG was designed to isolate untrusted Office files in a secure Hyper-V container.
- Microsoft recommends alternatives: Protected View, Defender for Endpoint ASR rules, and Windows Defender Application Control.
- The deprecation will be phased, starting in February 2026 with Office version 2602.
- Protected View will be the new norm, locking documents in read-only mode.
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