Multiple networks created in Windows 11

Windows keeps creating new networks. Right after install theres only the one, a couple of reboots later theres three. Now a fourth:

Theres only one zt adapter listed by ipconfig, one in device manager. However in the control panels network center theres this.

The problem survives a complete windows reinstall, so I presume its a bug of some kind? Always one of these networks is in the Public zone. I know group policy allows ownership naming of networks that are in the process of being “identified”, so it may be something to do with that? Setting the non-phantom network to Private via PS works, but then theres also only one with a Zero* alias.

I notice also that file sharing seems to stop working to this machine - i can remote from it into the NAS or directly mount the share, but cant see it in Networks as normal…

Any ideas? A fourth windows reinstall doesnt seem likely to fix whatevers going on here. Im on the latest ZeroTier 1.14.1, latest Windows 11 Pro, completely stock. All peers pingable and directly connected.

What does this command return?

zerotier-cli.bat listnetworks

Less the header line, having one zt adapter for each line here is normal.

If only one ZeroTier network is active, then this kind of bug can happen if the ZeroTier installer runs as anything less than a full local Administrator, or if NTFS ACLs on the ZeroTier configuration files are changed in unusual ways. Ditto for the ZTTAP device driver.

Get ZeroTier working before doing things like:

  • Applying GPOs
  • Joining a domain
  • Installing endpoint protection or other AV Software
  • Running it in a virtual machine where the emulated MACs are dynamically assigned or can otherwise change.

It returns just the one network.

Perhaps it was enabling network discovery before installing zt? Thats the only thing i can think of that would change group policy with my intervention immediately after install. That and running

Get-NetConnectionProfile | Where-Object "InterfaceAlias" -like "Zero*" | Set-NetConnectionProfile -NetworkCategory Private

I dont remember this happening before 14.1 and ive installed it on a bunch of win 11 pro machines and vms…

Any way to deal with this without another reinstall? I believe this last time i used an admin command line to install zt.

Just to update - i reinstalled windows again, this time interrupting the OOBE setup and setting zt up using the admin account in Audit mode.

Same thing.

This is a tough and somewhat novel problem. If you diagnose it or run it ground, then please mention it here for posterity.

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