I've just built up and published on github the windows binaries to go with the 2.6.3 release
https://github.com/steveloughran/winutils/tree/master/hadoop-2.6.3/bin these are just off the release commit, #95d8146, built on windows server 2012/64 bit. They aren't official ASF artifacts, but I've signed them with my gpg KEY. Handy for anyone trying to run spark standalone on windows & other desktop-side apps -Steve