[KB9199290] – How to Fix the Windows 10 Update 20H2 Error 0x800f0900?

The 0x800f0900 error occurs when you try to install cumulative updates for Windows 10. Windows 10 Update Error Code 0x800f0900 translates to CBS_E_XML_PARSER_FAILURE which indicates that some system files related to the update process are corrupted. In this article, we will discuss the major causes of this Windows 10 Update 20H2 Error 0x800f0900 and the solutions needed to resolve this Windows 10 Update Error Code 0x800f0900.

Error Code 0x800f0900 Returns With Following Error

0x800f0900 windows 10/11 update error.
Error encountered windows update 0x800f0900.
(KB4464218) – Error 0x800f0900.
Update error 0x800f0900 on Windows 10/11.
Windows 10 Updates “Failed To Install 0x800f0900.

Reasons of the Windows Update Error code 0x800f0900

Several reasons may cause this Windows 10 Update 20H2 Error Code 0x800f0900 issue, such as

1. Missing or corrupted files
2. Malfunctioned services
3. Configuration issues, and
4. Other problems prompting the error

[KB9199290] – Solutions to resolve the Windows 10 Update Error 0x800f0900

Run Windows Update Troubleshooter

• Firstly, open the troubleshoot option in the Windows search box
• After that, click Troubleshoot settings and Select the Additional troubleshooter’s option

• Next, click on Windows Update and then press the button Run the troubleshooter

Run System File Checker (SFC) scan to fix Windows 10 Update 20H2 Error 0x800f0900

• Open and select Command Prompt Run as administrator
• After that, type sfc /scannow command and press Enter key

• Let the command complete and then reboot the machine

If SFC scan fails, try these steps

1. Open the Windows PowerShell and select Run as administrator
2. After that, type the following commands and press Enter key

Repair-WindowsImage -Online -RestoreHealth

3. Let the command complete, restart your system

Reset Windows Update components 

1. Firstly, open Command Prompt and Run as Administrator
2. After that, type following commands one-by-one followed by Enter key

net stop wuauserv

net stop cryptSvc

net stop bits

net stop msiserver

Reset the Software distribution Folder

1. Firstly, open Command Prompt and Run as Administrator
2. After that, type following commands one-by-one followed by Enter key

Ren C:\Windows\SoftwareDistribution SoftwareDistribution.old

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

Perform clean boot on your computer 

• Sign in to the computer as an administrator
• In the Search box, type msconfig and select System Configuration from the list of results
• On the Services tab of System Configuration, select Hide all Microsoft services, and then select Disable all

• After that, select Open Task Manager
• On the Startup tab in Task Manager, select the item and then select Disable
• Close Task Manager

Finally, follow the above explained steps and restart your system services will ideally resume your updates to work. If you still need help to resolve this windows update error code 0x800f0900, we suggest you to chat with our experts. I am sure they will help you resolve this issue completely. You can also visit our website for more details and information.