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0x800f0922Windows Update install failureError codeWidely reported

0x800f0922: Windows Update install failure

Updated Oct 3, 2026 · Checked against Microsoft documentation · How this page is made

Quick answer

The 0x800f0922 error indicates that a Windows update failed because a background task is corrupted. This prevents the system from properly installing or registering new update components. You can resolve this by removing the corrupted task and cleaning up staged update packages.

What it means

What this error means

When you see error 0x800f0922, Windows is telling you that the update process failed because it could not complete a required task. Specifically, the system is trying to run a background operation—often related to the Task Scheduler—but it finds that the necessary files or configuration data are missing or damaged. This results in a 'CBS_E_INSTALLERS_FAILED' status, which is a technical way of saying that the update installer encountered a blocker it could not bypass.

Why it happens

Windows updates rely on a series of automated tasks to prepare your system for new files. One of these specific tasks, known as 'SecureBootEncodeUEFI', is responsible for handling security-related configurations during the update process. If the registry entries or files associated with this task become corrupted, the update process hits a wall. Because the system cannot verify or execute this task, it stops the entire update to prevent potential instability, rolling back any changes it already made. This is why you often see the update reach a certain percentage before failing and reverting to your previous state.

Common causes

  • A corrupted scheduled task prevents the update from completing.
  • Missing registry entries for the SecureBootEncodeUEFI task.
  • Staged update packages are interfering with the current installation attempt.
  • The Task Scheduler service is unable to load required components.

How to fix it

Safest and most likely fixes first. Readers' answers to "Did this fix it?" reorder this list over time.

  1. Remove corrupted task registry entries

    Use this if you have confirmed the SecureBootEncodeUEFI task is corrupted.

    1. Open the Start menu, type cmd, right-click Command Prompt, and select Run as administrator.
    2. Run the command: reg query "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\Microsoft\Windows\PI\SecureBootEncodeUEFI" /v ID
    3. Note the {GUID} value returned by the command.
    4. Run the following commands one by one, replacing {GUID} with the value you found: reg delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Maintenance\{GUID}" /f
    5. Run: reg delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Plain\{GUID}" /f
    6. Run: reg delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tasks\{GUID}" /f
    7. Run: reg delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\Microsoft\Windows\PI\SecureBootEncodeUEFI" /f
    Did this fix it?

  2. Clean up staged update packages

    Use this if the update continues to fail after removing the corrupted task.

    1. Open Command Prompt as an administrator.
    2. Run the command: Dism /english /online /get-packages /format:table | findstr /i "Staged"
    3. Identify the package name from the list.
    4. Run the command: Dism /online /remove-package /PackageName:YourPackageNameHere (replace with the actual package name found in the previous step).
    Did this fix it?

Is it just you?

25+ Microsoft Q&A threads discuss this. Most recent activity:

Checked Oct 2, 2026. Refreshed automatically every few days.

Sources

Frequently asked questions

What does 0x800f0922 mean for my PC?

It means a specific background task required for Windows updates is broken, preventing new updates from installing.

Will my files be deleted if I fix this?

No, these steps only remove corrupted system task configurations and temporary update files, not your personal data.

Why does the update roll back after this error?

Windows automatically reverts changes to keep your system stable when it detects that an update cannot finish successfully.