Microsoft fixes KB5089549 Windows security update install issues
ID: 77057173-8789-5637-9f80-63c7f1af5604
STIX ID: report--77057173-8789-5637-9f80-63c7f1af5604
Feed Name: Bleeping Computer
Threat Score
Microsoft addressed a Windows 11 update failure caused by limited free space on the EFI System Partition (ESP) that led to installation rollbacks with errors such as 0x800f0922; the issue was resolved in the May 26, 2026 preview cumulative update (KB5089573), and mitigations include installing the update, using Known Issue Rollback, or applying Group Policy in managed environments.
Your team is not currently subscribed to this feed. You must subscribe to it in order to see this post.