Deco Not Connecting / No Internet

How to Fix It

1. Check if the ISP or modem is the issue.

   Check the modem's internet or WAN indicator light — if it is off or red, the ISP connection is down. Call the ISP or check their status page for outages. If the modem shows a working internet connection but the Deco does not, the issue is in the Deco configuration.

2. Restart the modem first, then the Deco.

   Unplug the modem from power for 30 seconds. Wait for the modem to fully reconnect to the ISP — solid internet light confirms this. Then restart the Deco main unit by unplugging it for 10 seconds. The modem must be fully online before the Deco restarts — otherwise the Deco cannot get a valid IP address.

3. Check the internet connection type in the Deco app.

   Open the Tether app or Deco app → Internet → Internet Connection Type. For most home connections: select DHCP (automatic IP). For fibre connections that require a username and password: select PPPoE and enter the ISP credentials. An incorrect connection type causes the Deco to fail to authenticate with the ISP.

4. Enable bridge mode on the ISP modem if needed.

   If the ISP modem is a combined modem/router, it may conflict with the Deco acting as a router — a 'double NAT' situation. Log into the modem's admin interface and enable Bridge Mode, DMZ, or IP Passthrough for the Deco's MAC address. This passes the internet connection directly to the Deco and lets the Deco manage all routing.

5. Factory reset the Deco main unit.

   If all else fails, factory reset the Deco main unit. Use a pin to hold the reset button inside the small hole on the device for 10 seconds until the LED turns amber, then release. After the reset, set up the Deco network fresh in the Tether or Deco app — this resolves configuration corruption.