KB3079904 replaces KB3077657, which came out last Tuesday. This update affects Vista, 7, 8, 8.1, Server 2008/R2 and 2012/R2
https://technet.microsoft.com/en-us/...or=-2147217396

For Win10 Preview, it's KB3074667
https://support.microsoft.com/en-us/...?wa=wsignin1.0

For more info, see this article:
http://www.infoworld.com/article/295...b-3074667.html