Microsoft Confirms Windows 11 Update Failure Causing Error 0x800f0922
ID: bf5d0885-aee9-509d-ba3c-2fffcb54ff9b
STIX ID: report--bf5d0885-aee9-509d-ba3c-2fffcb54ff9b
Feed Name: Cyber Press
Threat Score
Microsoft acknowledged that the May 2026 cumulative update KB5089549 for Windows 11 (25H2/24H2) is failing to install for a subset of devices with error 0x800f0922; the failure is linked to Secure Boot certificate rollout and installer changes, preventing deployment of security fixes and a BitLocker recovery-loop fix, and Microsoft has added the issue to the update’s change log while administrators are advised on verification and remediation steps.
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