How do I update C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\system.core.dll from version 4.8.4390.0 to 4.8.4590.0?

[Mike S Hess]

Nessus is reporting the following: The remote host is missing one of the following rollup KBs : \n\nCumulative\n - 5020872C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\system.core.dll has not been patched.\n Remote version : 4.8.4390.0\n Should be : 4.8.4590.0Though it says "one of the following," it only lists the one, and when we try to run KB5020872, we get "This update is already installed."I found a similar issue on these forums, related to .NET 3.5, where the solution was to install .NET 3.5, which seems counter-intu

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