Windows Update Error 0x800F0922: Causes and Steps to Diagnose Install Failures

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Error 0x800F0922 (CBS_E_INSTALLERS_FAILED) occurs when a Windows update fails during installation and Windows rolls the update back. It is recorded in event 20 of the System log and in the update history, and can also appear when removing server roles or features. The failure stems from an advanced installer, such as one registering a scheduled task, that fails during the update's operation queue. Administrators can identify the failing update and installer through PowerShell event queries and by searching the CBS.log file. When the same installer fails across several machines, the cause is likely a shared issue, such as a corrupted SecureBootEncodeUEFI scheduled task, which can be resolved by removing its registry entries and reinstalling the update.

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