Just thought I drop this here, since the fix was moved to the "General Software Section" for no apparent reason and hopefully the sticky won't get moved smh...
With RS4 you can either uninstall the offending KB or replace the mcupdate_genuineintel.dll located in Windows/System32 . RS5 is, concerning the mcupdate_genuineintel.dll that is updated with the carpy code, is integrated. So there is no KB to remove, to uninstall. The fix now is it take ownership of that file, rename or delete it and replace it with a version prior to the patch. I used the July version in SXS backup. Works perfect.
Until there's a fix, this is how you get your OC back. Enjoy.