Microsoft's Windows Server vNext preview program has introduced three significant features since build 29531, released on February 12, 2026: boot support for the Resilient File System (ReFS), a built-in NVMe-over-Fabrics (NVMe-oF) initiator for high-performance network storage, and Quick Machine Recovery (QMR) for automated recovery from boot failures. Build 29621, released July 13, 2026, adds an early implementation of Trusted Launch for Hyper-V virtual machines. This article covers what each feature does, its requirements, and its current limitations.
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