And just like Version 1703 Build 16179 will not install over Build 16170 on one computer. Build 16179 on another similar machine updated okay to Build 16184 but failed to go to 16188. Since both machines are set to expire on 5/15/17 guess they'll be going to the scrap heap. Or maybe it's time for Linux, a real shame as some of the things I do need Windows-based programs.