Hardening changes for ReFS volumes on removable media

MC1506290 · published Oct 13, 2026 · 0 replies

What and why:Microsoft is making hardening changes to the Resilient File System (ReFS). The changes improve the security posture of Windows by adding visibility into unsupported external ReFS configurations and by providing controls to block affected volumes. The changes apply to all supported Windows platforms in phases to allow your organization to review audit data and address dependencies. Rollout schedule:October 2026 Windows security update (Audit phase)January 2027 Windows security update...