Windows update fails with Error 0x800f0900

Unable to install both latest cumulative updates.

The installation of 2019-04 Cumulative Update for Windows 10 Version 1803 for x64-based Systems (KB4493437) failed yesterday with Error 0x800f0900 and today the installation of 2019-05 Cumulative Update for Windows 10 Version 1803 for x64-based Systems (KB4499167) failed too with same Error 0x800f0900.

I ran the Troubleshoot app on Windows Update. It fixed Service registration missing or corrupt. However, running Windows update still failed with same Error 0x800f0900.

Restarted the computer several times and search the internet for fixes without success.

Please help. Thanks, Blaise


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Answer
Answer

Hello,

Please refer these suggestions:

1. Run System File Checker scan:

  • Search for 'command prompt' using Cortana or Windows Search.
  • From results, right click on Command Prompt and select Run as administrator.
  • Type sfc /scannow command and press Enter key.
  • Let the command complete and then reboot the machine.

2. If SFC scan fails, try these steps:

  • Search for 'windows powershell' using Cortana or Windows Search.
  • From results, choose Windows PowerShell and select Run as administrator.
  • Then type/paste following and press Enter key

Repair-WindowsImage -Online -RestoreHealth

  • Let the command complete, restart your system then.

3. Reset Windows Update database:

Open administrative Command Prompt and type following commands one-by-one followed by Enter key.


net stop wuauserv

net stop cryptSvc

net stop bits

net stop msiserver

Ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

Ren C:\Windows\System32\catroot2 Catroot2.old

net start wuauserv

net start cryptSvc

net start bits

net start msiserver

4. Reset Windows Update components: https://docs.microsoft.com/en-us/windows/deployment/update/windows-update-resources

5. Install updates manually using this guide: https://www.kapilarya.com/manually-download-and-install-windows-updates-in-windows-10

Hope this helps!

Note: Included link in this reply refers to blog post by a trusted Microsoft MVP. 

___________________________________________________________________________________________________

Microsoft MVP (Windows IT Pro), since 2014 · Windows Insider MVP · Windows Help (www.kapilarya.com)

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Answer
Answer
Hi BlaiseNZ
Greetings! I am Vijay, an Independent Advisor. I am here to work with you on this problem.

KB4499167 replaces KB4493437 as KB4499167 is latest. I recommend that you do a manual update for this KB4499167. To know the KB number - Windows Key+i to invoke Settings > Update & Security > See which updates are getting installed. If this information is not available here > Click View installed update history to see which updates have been installed.

1. Windows Key+X > Windows Powershell (Admin)
Type following (or copy and paste following) one by one and Enter

net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver
Ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
Ren C:\Windows\System32\catroot2 Catroot2.old
net start wuauserv
net start cryptSvc
net start bits
net start msiserver

2. Type following in Windows Start Search box (Cortana) and hit Enter %systemroot%\Logs\CBS > Rename CBS.Log to something else.
If it doesn't allow you to rename - Type services in Windows Start Search box > Click Services > Scroll down to find the Windows Modules Installer service and double-click on it > Set its startup type to Manual > Reboot your computer
Go to C:\Windows\Logs\CBS > Rename CBS.Log > Reboot your computer > Then go back into the Services App and set Windows Modules Installer Service back to Automatic Startup (Note CBS log files contain information about windows update, SFC etc)

(Source - https://partnersupport.microsoft.com/en-us/par_...)

3. You can download the updates from Microsoft Catalog and update manually. Search for relevant KB in the Catalog.

Microsoft Catalog - https://www.catalog.update.microsoft.com/Home.aspx

Do let me know if you require any further help on this. Will be glad to help you.

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Last updated May 15, 2021 Views 25,072 Applies to: