This is the missing Belkin B2B128 driver for the gigabit ethernet adapter: AX88179 -- USB3.0 to 10/100/1000M Gigabit Ethernet Controller. The ASIX web page to download the driver for all OS versions is here: http://www.asix.com.tw/products.php?op=pItemdetail&PItemID=131;71;112.
I had the same problem as everyone else, but I finally got Windows to update the missing driver manually through Device Manager. As soon as I verified the driver had been updated correctly, I ran down the files Windows used to update it on my system and found: ASIX (ax88179_178a.sys specifically).