Installing roles and features error 0x80073701
Mar 12, 2019 · Error 0x80073701 is ERROR_SXS_ASSEMBLY_MISSING, it means there are some system files are missing, which caused the update installation failure. According to the CBS log you provided, please check if you have installed KB4487006, try to uninstall KB4487006. If it hasn't been installed, please download from Microsoft Catalog website.
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