All news with #windows defender application control (wdac) tag
Wed, November 5, 2025
Microsoft to Remove Office Sandbox MDAG from Enterprise
#Microsoft
#Attack Surface Reduction (ASR)
#Windows Defender Application Control (WDAC)
#Security Advisory
#Product Release
🔒 Microsoft confirmed that Microsoft Defender Application Guard (MDAG) for Office will be removed from enterprise Office builds, with phased removal beginning in 2026 and final cut-offs through 2027. MDAG used Hyper‑V sandboxing to isolate malicious Office documents but incurred slower load times and carried sandbox escape risks. Microsoft advises enabling Attack Surface Reduction (ASR) rules and Windows Defender Application Control (WDAC), and reviewing any automation, workflows, or SIEM integrations that depended on MDAG’s isolation logs.