BTW, I did check out Visual Studio 2012 RC5 that has just been released. There are no newer 2012 runtimes included in that release than what is already included in the installer .
Ok so i'm assuming KB3074674 is replacing the rest then, Did the build number change after KB3074674 was installed or is the build number still .16393 ?
Make a folder in C:\ drive and name it tools copy cab and msu updates into it. Examples C:\tools Run CMD as Admin now copy and past below code in and press enter. Code: Dism /Online /Add-Package /PackagePath:C:\tools