Hi @Rolleke
Thanks for your post!
Assuming your PC is on the same network (which is marked as Private by Windows), has an exception in the firewall for Sonos and has no VPN active, you should be getting connected to your Sonos system.
If the system you can’t connect to is the one with a Beam and four Play:1s, only the Beam is currently connected to the cloud. If you didn’t leave the router off or at least 30 seconds when you rebooted it, please try this.
If you still can’t connect, however, I recommend you get in touch with our technical support team, who have tools at their disposal that will allow them to give you advice specific to your Sonos system and what it reports. They will also be able to remotely connect to you PC to investigate.
I hope this helps.