Microsoft has taken swift action to resolve a significant issue affecting certain Windows 11 systems following the installation of the KB5058405 security update from May 2025. Users of the impacted systems have reported encountering 0xc0000098 recovery errors linked to ACPI.sys, the critical driver responsible for power management and device configuration within the Windows environment. This error indicates that the operating system could not be loaded, necessitating repairs.
The company acknowledged the problem on Thursday, clarifying that it primarily affects Windows 11 versions 22H2 and 23H2 within enterprise settings. The issue is particularly prevalent among Azure Virtual Machines, Azure Virtual Desktop, and on-premises virtual machines hosted on platforms like Citrix or Hyper-V. Microsoft stated, “We are investigating reports of the May 13, 2025 Windows security update (KB5058405) failing to install on some Windows 11, version 22H2 and 23H2 devices.”
Importantly, Microsoft reassured users that those operating Windows Home or Pro editions in home environments are unlikely to encounter these issues, as the affected virtual machines are predominantly utilized in IT environments.
Emergency update available via Microsoft Update Catalog
In response to the situation, Microsoft released the KB5062170 non-security out-of-band update over the weekend, designed to address the installation and boot problems. This update can be manually installed using standalone MSU packages available from the Microsoft Update Catalog.
For Azure customers who have already implemented the May 2025 Windows security update and are facing difficulties, Microsoft recommends utilizing Azure Virtual Machine repair commands as a temporary workaround. The company further advised, “If you have not yet deployed the May 2025 Windows security update (KB5058405) and your environment includes devices running in a virtual desktop infrastructure on Windows 11, versions 22H2 and 23H2, we recommend you apply the OOB update instead.”
This is not the first time Microsoft has addressed issues related to Windows 11 updates. In April, the company resolved a “latent code issue” that caused some systems to upgrade to Windows 11 automatically, despite existing Intune policies meant to block such upgrades. Additionally, Microsoft rectified a known issue that hindered Windows 11 24H2 feature updates via Windows Server Update Services (WSUS) after the deployment of the April 2025 security updates. Earlier this month, another series of emergency out-of-band updates were issued to mitigate a Windows 10 bug that forced PCs into BitLocker recovery following the installation of the May 2025 security updates.
