Windows 10: How to change Loopback's NetworkCategory from Public to Private?

Question

On my Windows 10 laptop, I have 2 interfaces:

PS C:\WINDOWS\system32> Get-NetConnectionProfile

Name             : Unidentified network
InterfaceAlias   : Loopback
InterfaceIndex   : 16
NetworkCategory  : Public
IPv4Connectivity : NoTraffic
IPv6Connectivity : NoTraffic

Name             : BoonMIFI_149E
InterfaceAlias   : Wi-Fi
InterfaceIndex   : 11
NetworkCategory  : Public
IPv4Connectivity : Internet
IPv6Connectivity : NoTraffic

I have been trying to change the loopback's NetworkCategory from Public to Private using secpol.msc: Network List Manager Policies > Unidentified networks > Private but this doesn't seem to change it.

How do I change the loopback's NetworkCategory from Public to Private?

Answer 1

I found the answer by experimentation:

PS C:\WINDOWS\system32> Set-NetConnectionProfile -InterfaceIndex 16 -NetworkCategory Private
PS C:\WINDOWS\system32> Get-NetConnectionProfile


Name             : Unidentified network
InterfaceAlias   : Loopback
InterfaceIndex   : 16
NetworkCategory  : Private
IPv4Connectivity : NoTraffic
IPv6Connectivity : NoTraffic

Name             : BoonMIFI_149E
InterfaceAlias   : Wi-Fi
InterfaceIndex   : 11
NetworkCategory  : Public
IPv4Connectivity : Internet
IPv6Connectivity : NoTraffic

However, this does not persist across reboots (and reverts back to Public).

Also, it's strange that secpol.msc doesn't seem to work while PS command does.