Here’s a summary and important insights on the recent Windows 11 hotfix for the system-crashing issue (error code 0xc0000098):
What Happened?
In May 2025, Microsoft released update KB5058405 for Windows 11 23H2 and 22H2.
This update intended to fix security issues but instead caused some PCs—especially virtual machines (Azure, Hyper-V, Citrix)—to fail to boot, showing error code 0xc0000098, often referencing the ACPI.sys file.
Microsoft released emergency out-of-band update KB5062170 as a hotfix.
This patch is aimed at systems broken by KB5058405 with the 0xc0000098 error.
If KB5058405 is installed and you’re not experiencing problems, don’t install KB5062170.
How to Get the Hotfix?
KB5062170 is not delivered automatically: you must manually download it from the Microsoft Update Catalog.
What Is the Nature of the Error?
Error: “Your PC/Device needs to be repaired. The operating system couldn’t be loaded because a required file is missing or contains errors. File: ACPI.sys Error code: 0xc0000098.”
Sometimes, it may reference another file.
References & Details
Official discussion and support threads confirm the details, nature, and scope of the problem, including the emergency patch and recovery steps.
If your environment is affected (especially in IT/enterprise settings with VMs), download and deploy KB5062170 from the Microsoft Update Catalog to resolve the issue.
Let me know if you need step-by-step recovery instructions or download links! Source: PCWorld Microsoft releases Windows 11 hotfix for PCs crashing with code 0xc0000098