Perhaps some settings in your Windows session need to be checked. Use the "Networking" control panel to make sure all the settings are correct. The "adapter" type should be listed as the "Merge NIC".
For example if you leave the IP Address setting blank, then Windows setup assumes that you really did not want to install networking!
If this is the case, you should do the "Upgrade to VNET Networking" procedure that is covered in chapter 2 of the User's Guide.
If your Windows session has the "Network Neighborhood" icon, then follow the advice in the previous section "VNET networking was working but now it is not".
With the Microsoft Network Neighborhood, it takes some time for it to set it self up each time you start up a Windows session. So if you do not see everything you expect right away, just give it some time.