Here is the working solution to vxdiag scanner with 2TB hard drive (HDD) no network connection problem.
Symptoms:
1. No device is detected in vx manager
2. No network connection when choosing certain software GM, Subaru, Porsche etc
Reason:
Missing Ethernet Network Controller driver (NIC driver)
How to solve:
Run NETWORK program on desktop or Tool folder, install the Driver Genius. The network connection should be fine.