Try the manual steps here.
https://learn.microsoft.com/en-us/troubleshoot/windows-client/deployment/additional-resources-for-windows-update#reset-windows-update-components-manually
otherwise some options here to try.
https://support.microsoft.com/en-us/windows/recovery-options-in-windows-31ce2444-7de3-818c-d626-e3b5a3024da5#WindowsVersion=Windows_8.1
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