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I installed it and so far no activity, no connections showing. Refresh does nothing. Far below the quality I expect from the wonderful Start11 experience. I'd post some screenshots but no way to do that. Ugg. Did anyone test this???
Hello,
Sorry to hear you are having issues. First, please try, uninstall Connection Explorer, reboot immediately (important), download latest version available in your account product download page: https://store.stardock.com/myaccount/products. Install it, reboot immediately again. Retest it and report back.
If the issue still appear, we need more details.
You can add screenshots by using any one of these buttons.
Thank you,
Basj,
Stardock Community Assistant.
Hi, That seemed to fix it. Question, I have Fing, and it is alerting me to some UPnP connections from my machine on two UDP ports. I was hoping Connection Explorer could help figure out what app is doing this. I have UPnP turned off in my router so I assume that these aren't valid connections. I have Tailscale could it be that? Thanks!
Hello,
I have forwarded your problem/question to Stardock Support Team for their assistance. Please keep an eye on this thread for any updates. We appreciate your feedback and patience. Thank you.
Basj,
Stardock Community Assistant
Like with all our products, for a very long time, donrubin
1st rule of support, ty @basj.
Yes, Tailscale is a very plausible source. It tries NAT-PMP, PCP, and UPnP-IGD to ask the router for a port mapping so
peers can connect directly — even if your router has UPnP disabled, Tailscale still sends the discovery packets (SSDP
on UDP 1900, NAT-PMP/PCP on UDP 5351). The router just ignores them.
A couple of things to check:
What ports is Fing flagging?
- UDP 1900 → SSDP/UPnP discovery (Tailscale, Windows Network Discovery, Plex, Spotify Connect, Chromecast apps all do
this)
- UDP 5351 / 5350 → NAT-PMP/PCP (Tailscale, some torrent clients)
- UDP 3702 → WS-Discovery (Windows itself)
To confirm it's Tailscale on Windows, open PowerShell as admin and run:
Get-NetUDPEndpoint | Where-Object { $_.LocalPort -in 1900,5350,5351 } | Select-Object LocalPort, OwningProcess
Get-Process -Id <PID>
That'll tell you exactly which process owns the socket. If it's tailscaled.exe, mystery solved.
You can also disable Tailscale's port-mapping attempts if you want the noise to stop — but they're harmless; with
router UPnP off they just go unanswered and Tailscale falls back to DERP relays or STUN.
Sean Drohan
Stardock Product Lifecycle Manager
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