Deco Node Offline / Satellite Not Connecting

How to Fix It

1. Restart the offline Deco node.

   Unplug the offline Deco satellite node from power, wait 10 seconds, and plug it back in. The LED will cycle through colors during startup. Wait up to 2 minutes for the node to reconnect to the mesh and appear online in the Deco app.

2. Move the node closer to the main unit.

   TP-Link Deco nodes work best when within 15–20 metres of the main unit with minimal walls between them. Temporarily place the offline node in the same room as the main unit to confirm it can connect at close range. If it connects, gradually move it to the desired location — place an intermediate node if the distance is too great.

3. Check the Deco app for signal quality.

   Open the Tether/Deco app and select the offline or weak node. The app shows the connection quality between the node and the main unit. A poor or fair connection means the node is at the edge of coverage — repositioning to improve signal will also improve reliability.

4. Remove and re-add the node in the Deco app.

   Open the Deco app and tap the offline node → Settings → Remove. After removing, tap + and add the node back to the network. This re-establishes the node's mesh configuration and resolves persistent offline states caused by a corrupted pairing.

5. Factory reset the offline node.

   Use a pin to hold the reset button (inside the small hole on the node) for 10 seconds until the LED turns amber, then release. After the reset, add the node back to the network in the Deco app. A factory reset clears any corrupted state that prevents the node from joining the mesh.