I had the same problem. In my case the problem only occurred when I did builds for windows 8. Windows 7 builds did not have the issue. The problem is caused by a Microsoft update - http://support.microsoft.com/?kbid=2862966 I removed the fix, disabled updates and my builds are working again.
FWIW, here is a link to the discussion where I found this info - https://www.osronline.com/ShowThread.cfm?link=246887