Why Would Vector Basemap "streets-vector" Not Display in IE11?

KirstenFrost_Andersen

I have one computer that will not display an ESRI vector base map:

var map = new Map({
              basemap: "streets-vector"
          });

It works on all other computers I have tried, just one computer for all users won't display this base map.  The "topo" and "streets" base maps work just fine.  Any ideas?  I'm guessing it's a settings issue, but I am simply helping debug this app, I am not very familiar with ArcGIS for JavaScript API. I haven't found anything different in Compatibility View on a computer that works and this one that doesn't.  Same with the Internet Options settings.  The computer is on Windows 8 and the one I'm testing against that does work is Windows 10.  Both IE11.  Firefox and Chrome display the basemap just fine.  I welcome any ideas on what to look for, either in IE settings or in code. 

KirstenFrost_Andersen

Steve, apparently the computer that doesn't work doesn't see the "via x-ua-compatible" meta tag.  So that may be the key, especially given Robert's suggestions.  So I need to figure out why not. 

This is from a computer that works:

This is from a computer that doesn't display the basemap on the same network: