Currently Collector will only run on Windows 10
You can read Jeff Shaners comments in these blog posts which go over the reasons as to why the team went with a windows 10 solution.
Collector for ArcGIS on Windows 10 is now available! | ArcGIS Blog
Collector for ArcGIS on Windows 10 is in Beta! | ArcGIS Blog
Rope this helps you out.
Russ
Currently Collector will only run on Windows 10
You can read Jeff Shaners comments in these blog posts which go over the reasons as to why the team went with a windows 10 solution.
Collector for ArcGIS on Windows 10 is now available! | ArcGIS Blog
Collector for ArcGIS on Windows 10 is in Beta! | ArcGIS Blog
Rope this helps you out.
Russ