If you are no longer able to connect to the Internet via your docking station’s Ethernet port after upgrading from Windows 8 to Windows 8.1, this blog post may help. This issue can be caused by Windows choosing the wrong Ethernet driver after the update. To confirm this problem, open Device Manager and look for “DisplayLink Network Adapter NCM.” If the error below appears in the DisplayLink Network Adapter properties page, the solution that follows should restore your Ethernet:
“This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)”
To solve this issue, remove the DisplayLink Network Adapter NCM driver and re-install the drivers located at C:\Program Files\DisplayLink Core Software\CdcNcmDriver\Ndis6.2.Hck81
Here are step-by-step instructions:
1) Locate the Device Manager.
2) Locate the DisplayLink Network Adapter in Device Manager and select the device properties.
3) Select the Driver tab and uninstall the driver. On the next screen, be sure check the box for “Delete the driver software for this device.”
4) Reinstall the appropriate driver. Using the “Browse for driver software on your computer” option, locate the driver in C:\Program Files\DisplayLink Core Software\CdcNcmDriver\Ndis6.2.Hck81 and click OK.