Overview
- Microsoft has confirmed that the May 13 KB5058405 cumulative update prevents some Windows 11 22H2 and 23H2 devices from booting, displaying a 0xc0000098 recovery error.
- The issue predominantly impacts enterprise environments running Azure Virtual Machines, Azure Virtual Desktop and on-premises VMs on Citrix or Hyper-V, with Windows 11 Home and Pro editions largely unaffected.
- Affected systems reference ACPI.sys, the kernel-mode driver responsible for Advanced Configuration and Power Interface functions, indicating a critical boot dependency failure.
- This incident follows earlier May update troubles, including a BitLocker recovery screen bug on Windows 10 and blocked Windows 11 24H2 feature updates via WSUS that prompted out-of-band fixes.
- Microsoft’s Windows release health dashboard states engineers are investigating the failures and will issue a corrective patch once testing is complete.