How to Fix the Windows 10 Update 20H2 Error code 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 thi

Reasons of the Windows Update Error code 0x800f0900

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

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