Microsoft has confirmed that some Home windows 11 techniques may fail to begin after putting in the KB5058405 cumulative replace launched throughout this month’s Patch Tuesday.
On affected units, customers see 0xc0000098 restoration errors in ACPI.sys, warning that the machine needs to be repaired as a result of the working system could not be loaded.
ACPI.sys is the Home windows Superior Configuration and Energy Interface (ACPI) driver, a kernel-mode driver crucial for energy administration and machine configuration on Home windows with an ACPI BIOS.
“We’re investigating reviews of the Could 13, 2025 Home windows safety replace (KB5058405) failing to put in on some Home windows 11, model 22H2 and 23H2 units,” the corporate stated in a Wednesday replace to the Home windows launch well being dashboard.
“Your PC/Machine must be repaired. The working system could not be loaded as a result of a required file is lacking or accommodates errors,” the error warns.
This recognized challenge impacts Home windows 11 22H2/23H2 techniques in enterprise environments and primarily impacts Azure Digital Machines, Azure Digital Desktop, and on-premises digital machines hosted on Citrix or Hyper-V.
Microsoft added that house customers of Home windows Dwelling or Professional editions are unlikely to face these issues as a result of the impacted digital machines are largely utilized in IT environments.
Redmond is investigating this challenge and stated its engineers will present extra data when it is accessible.
Earlier this month, the corporate mounted one other recognized challenge blocking Home windows 11 24H2 function updates by way of Home windows Server Replace Providers (WSUS) after putting in the April 2025 safety updates.
Beforehand, it shipped emergency out-of-band updates to mitigate a Home windows 10 bug that pressured affected PCs into BitLocker restoration after putting in the Could 2025 safety updates.
In April, Microsoft additionally addressed what it described as a “latent code challenge” inflicting some units to be upgraded to Home windows 11 robotically regardless of Intune insurance policies that ought to block Home windows 11 upgrades.
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