Manual steps are necessary to complete the installation of this update on devices which are experiencing this error.
The WinRE partition requires 250 megabytes of free space.
source: www.techworm.net
Microsoft Confirms It Cannot Fix Windows 10 KB5034441 “0x80070643 Error
Microsoft confirms that it cannot fix the error message "0x80070643 - ERROR_INSTALL_FAILURE" on Windows 10 caused by the KB5034441 update.
