Removing Phantom or Hidden Devices



After migrating drives from a windows server to a new server chassis, there could be an issue with the Ethernet adapters.

If you look in Device Manager and don't see another network adapter, even when selecting "Show Hidden Devices", and after assigning the old IPs back to the existing network adapter you get and error telling you that the address is already being use by another adapter in the machine.


Here are the step to get this error fix.


Bring up a Command Prompt.

  1. At the command prompt, type the following commands pressing ENTER after each line:
    1. set devmgr_show_nonpresent_devices=1
    2. start msc
  2. Click on the View menu and select Show hidden devices.


You will notice a few devices with the same name under the network devices, make sure to delete the ones that have an amber alert or warning symbol next to them.

After that restart the machine and the base network adapter should work, then you can assign the old IP to the adapter with no errors.

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