Hi,Phil-9511
KB4579979 is an old KB, it is replaced with the four KBs, you can choose the version of KB depends on your .NET Framework version:
Search the KB and download the specific version in this site
No need to install all the KBs. If you are using framwork 4.8, you just need to download KB4578976.
And this is the official link:
kb4579979
Best Regards,
Jerry Cai
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