A while back I changed our virtualization platform from VirtualIron to MS Hyper-V and that caused all network adapters to disappear on my VMs. Hyper-V installed its own. So when i tried to set fixed IP addresses to new adapters I got the following message: “The IP address XXX.XXX.XXX.XXX you have entered for this network adapter is already assigned…”
I thought the best way to resolve this issue was to remove the source of the problem (in this case these old VirtualIron network adapters), which is a bit hard to do if you can’t see these adapters. After digging around I found a nice MS KB article 269155, which helped me to reveal and remove those non present hidden devices.
Here’s what i did to reveal non present hidden devices.
- Click Start, click Run, type cmd.exe, and then press ENTER.
- Type set devmgr_show_nonpresent_devices=1, and then press ENTER.
- Type Start devmgmt.msc, and then press ENTER.
- Click View, and then click Show Hidden Devices.
- Expand the Network Adapters tree.
- Right-click the dimmed network adapter, and then click Uninstall.
Source: MS KB