Windows 10 Ethernet not working

Late 2013 27" iMac. Successfully installed Bootcamp / Windows 10 and it seems as though everything works except Ethernet. Wireless is working. There are no indications of a problem in Device Manager. It lists Broadcom NetXtreme Gigabit Ethernet. I've run the bootcamp driver installer for this model iMac and it finishes with no problem. Any ideas?