Microsoft confirms Windows 11 KB5089549 issues due to low storage, says it’s rolling out an emergency patch to fix install errors
AI-summarised brief · reviewed before publication
Microsoft has confirmed issues with Windows 11's May 2026 Update, citing low storage as the cause of installation errors such as 0x800f0922. The update fails to install on PCs with insufficient EFI partition space, which can occur when firmware updates or multiple operating system installations leave behind bulky files. Microsoft is rolling out an emergency server-side update to address these errors. The issue affects PCs with low EFI storage, and users may see error codes or experience boot loops during installation. Microsoft recommends checking EFI storage space before installing updates. An emergency patch is being rolled out to fix the issue.
💡 Why It Matters
- · The failure to install critical updates like Windows 11 KB5089549 can leave PCs vulnerable to security risks.
- · Microsoft's swift rollout of an emergency patch underscores the importance of resolving installation errors to ensure user safety.