I did at one point have a weird conversation with the freewire helpline. After going through some steps with one of the call centre helpers I was told to read out my physical address, which reads as '00-00-00-00-00-00'.
Open a command prompt and type
ipconfig /all
Examine the information relative to the problem network adapter
Write down the hex value of the information that says
Physical Address........00-50-56-C0-00-08 (should look something like that, but yours will be unique)
remove the dashes / hyphens (-)
That should leave you with a twelve digit hex value
Plug it in here
Type
ncpa.cpl
into the search box and hit enter
Select then right click the problem adapter and choose properties
Click the Configure button near the top right
Select the Advanced tab
In the left column (Property: )
select Network Address
Change the radio button from Not Present, to the other one that will allow you to enter information into the associated text box (Right column "Value:")
Type or copy and paste the 12 digit hex value that you created above (no dashes)
See if that helps
Regards
Randy