Microsoft says the March 2026 cumulative for Windows 11 (KB5079473) is not responsible for the wave of dramatic failure reports — and an investigation into machines that can’t access their C: drive points to a faulty Samsung app, not the Patch Tuesday rollup. com]
Background / Overview
Microsoft...
A wave of Windows 11 systems — most noticeably certain Samsung Galaxy Book models — have been hit by a frightening post-update failure that can leave the PC’s system volume effectively locked and users locked out of their own files and applications. After Microsoft’s February 10, 2026 cumulative...
Microsoft’s March cumulative update for Windows 11, KB5079473 (released March 10, 2026), is rolling out with a familiar mix of new features and security fixes — but a growing number of users now say the patch is also triggering severe instability on some machines, including hard freezes...