eero 6+ guest network cannot reach devices, cast or print

The checks in more detail

A common complaint is that a guest cannot connect, and the usual cause is a wrong password, a device that held an old saved entry, or a phone with a random Wi-Fi address feature that confuses the router. Have the guest forget the network and join again, and check the password in the app. Another complaint is that a guest device cannot reach something it should, such as a Chromecast, a printer or a speaker on the main network. That is the guest network working as designed, because it is isolated. For casting to a TV, put the TV and phone on the same network, either both on the main one or both on the guest one.

Check the guest settings for a time limit, since some setups pause guest access, and for the number of devices. If you use eero Secure features such as ad blocking, they apply to the guest network too only on eero's plan, so check the plan. The guest network uses the same radios as the main one, so a busy guest slows everyone; remove devices that are not needed. If the guest network disappears after an update, switch it off and on, and restart the eero. The eero 6+ remains the gateway or node as you set it.

Consider how you share the password. A written card on the fridge is simple, and the app can also share it by text or a code. Change the password after a long stay, and remove the guest network if you do not use it, as it takes some airtime. For smart home devices that do not need your files, such as a robot vacuum or a TV, the guest network gives a degree of separation, but check whether the device needs to talk to your phone on the main network before you move it, since the app may then fail to find it.