Device will not connect

If a device sits at Connecting and never reaches Connected, it is almost always network configuration. Settings that can be ignored on a local network have to be set for a device to reach the internet.

Check these first

Both of these are set on the device itself, in whichever configuration application its manufacturer provides.

Default gateway

The IP address of the device that gives this one its route to the internet — usually the router. Without it, the device has no way out of the local subnet.

DNS servers

A primary and a secondary DNS server address, so the device can resolve the Cloud service address. Some networks provide their own; public DNS servers also work.

Network blocks

The most common reason for a device not being able to connect is a network stopping it from reaching the internet at all, especially on larger managed networks. See Network requirements for the addresses and the port a device needs, and for what to ask a network administrator to allow.