SVCHOST-svchost.exe -k netsvcs uses 90% + CPU Usage, slows powerful machine to crawl-Whatsup?

SVChost.exe - k netsvcs has crippled my machine like no malwaer ever has. From what I can tell, this has something to do with Windows Update.
Nothing else unsual is running. There is no malware involved. And all updaes are installed Except I cannot update .net. I get the following error message:

"Microsoft .NET Framework 3.5 Service Pack 1 and .NET Framework 3.5 Family Update for .NET versions 2.0 through 3.5 (KB951847) x86"

What can I do? I am frustrated.

Question Info

Last updated June 15, 2019 Views 401,258 Applies to:
Thanks for the help! I followed Joel's advise above & it SEEMS to have resolved the problem. I say SEEMS, because I have seen the problem apparently resolved, only to resume again after a few days. Updated Malwarebytes showed no infection doing a deep scan.
I will be back if proble returns.... for now, issue resolved!

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