How to fix error 0x800f0989 when updating Windows 11

What is Error 800B0109 Windows Update?

Error code 0x800b0109 informs you that  some update files are not signed correctly. If your system fails to verify the update, you will receive this error message on Windows 11/10. You may have to run the Windows Update debugger, temporarily remove this update, etc., but that’s not a complete solution to the problem.

You could try to run these commands:

sfc /scannow

DISM /Online /Cleanup-Image /RestoreHealth

I always run these directly after updating just incase a file becomes corrupt during the upgrade process

Press Windows key+R to open Run then copy paste the command below

msdt.exe /id WindowsUpdateDiagnostic

Press Enter, Run the troubleshooter

**Make sure Windows Update and Background Intelligent Transfer services are available and running.

Click Start, type services.msc in the Start Search text area, and then click services.msc in the programs list. If you are prompted for an administrator password or for a confirmation, type the password, or click Continue.

Double-click Background Intelligent Transfer Service.
If the Startup status lists Stopped, click Start and then click OK. If the status is Running, click Restart
Double-click Windows Update.
If the Startup status lists Stopped, click Start and then click OK. If the status is Running, click Restart
Double-click Workstation.
If the Startup status lists Stopped, click Start and then click OK. If the status is Running, click Restart
Close the Services window and try to install updates again.

**Reset Windows Update Components
https://www.tenforums.com/tutorials/24742-reset…

**Here’s a direct download link of KB4586786 from Microsoft Update Catalog. Download and install the update manually.

2020-11 Cumulative Update for Windows 10 Version 1909 for x64-based Systems (KB4586786)
http://download.windowsupdate.com/d/msdownload/…

I hope this helps! Please let me know if you have any further concerns.

Fix Windows Update error 0x800f0989

To fix Windows Update error 0x800f0989 on Windows 11/10, follow these steps:

Run Windows Update Troubleshooter
Check Services Status
Reset Windows Update components
Download from Microsoft Update Catalog

Detailed steps are as follows:

Run Windows Update troubleshooter

The Windows Update troubleshooter is probably the best and first thing you need to use to get rid of this problem on your computer. Since it’s a built-in function, you don’t need to download anything. To use this troubleshooter, do the following:

Press Win + I to open Windows Settings.
Go to   System > Troubleshoot > Other troubleshooters  on Windows 11.
Go to  Update & Security > Troubleshoot > Additional troubleshooters  on Windows 10.
Learn the Windows Update troubleshooter.
Click the   Run or  Run the troubleshooter   button.
Follow the on-screen instructions to complete.

You may then have to restart your computer.

Check Service Status

There are several services responsible for smooth updates. If any of the accounting services is not running, there is a possibility of getting such an error while installing the update. Therefore, you are better off verifying if those services are running or not. Alternatively, you can also restart them. For that, do the following:

• Search for  services  in the  Taskbar’s search box.
  Click on individual search results.
  Double-click  Background Intelligent Transfer Service .
  If it is running, click the  Stop  button.
  Click   Start button   .
  Click   button OK  .
  Do the same for   Windows Update  and  Workstation   services.

For your information, the default configuration on a standalone Windows PC is as follows:

• Windows Update Service – Manual (Triggered)
• Windows Update Medic Services – Manual
• Cryptographic Services – Automatic
• Background Intelligent Transfer Service – Manual
• DCOM Server Process Launcher – Automatic
• RPC Endpoint Mapper –  Automatic
• Windows Installer – Manual.

After that, restart your computer and check if the problem is resolved.

Reset Windows Update components

There are several things responsible for getting updates on Windows 11/10. If one of them doesn’t work as expected, you may receive this error message on the Windows Settings panel when installing updates. If none of the above solutions work, you may need to reset Windows Update components. For that, you can follow this detailed guide to  reset Windows Update components manually to default .

Download updates directly from Microsoft Update

You can download and install it manually if you know the name of the update that is causing problems while downloading. The update can be downloaded from the official Microsoft website, which aggregates all updates. To do that, you need to go to catalog.update.microsoft.com  website, search for the update and download the corresponding update. You can then double-click the downloaded file to start the installation.

Good luck!