Fixing Windows Update Error 0x800f0900
Have you recently encountered error 0x800f0900 after attempting to update your version of Windows 10 to 1803, 1903 or 1909? Update error 0x800f0900 occurs most frequently when end users attempt to install a Cumulative Update on their Windows 10 systems. Error 0x800f0900 which is also known as CBS_E_XML_PARSER_FAILURE refers to an internal XML parser error.