If Apple TV has a "Network Issue" or "No Internet"
A "Network Issue" or "No Internet" message may appear in the Home app if Apple TV is unable to communicate with your Wi-Fi network or the active home hub.
Try these steps first
Make sure your modem and router are connected to power, then restart your modem and router.
Make sure your Apple TV and your iPhone are both connected to the same preferred Wi-Fi network.
To change which network your Apple TV is connected to, go to Settings, go to Network, select Wi-Fi, then choose a network from the list.
To change which network your iPhone is connected to, open the Settings app and tap Wi-Fi.
Get more help
If you need help with network settings and configuration, or you don't administer your network, work with your internet service provider (ISP) or network administrator.
No internet
If your modem and router are connected to power, but don't display solid lights indicating that they are connected to the internet, you may have an internet outage.
Many internet service providers (ISPs) have dedicated web pages or apps for reporting and tracking outages. Check your provider's website or app for information about potential outages in your area.
Wi-Fi not connected
Apple TV may be too far away from the router or access point. Try moving your Apple TV closer to the router or access point, and remove potential sources of wireless interference.
Network mismatch
Make sure your Apple TV and your active home hub are on the same network.
To change which network your Apple TV is connected to, go to Settings, go to Network, select Wi-Fi, then choose a network from the list.
You can check which home hub is active in the Home app. Tap the More button
, tap Home Settings, then tap Home Hubs & Bridges. You can check which network your active home hub is connected to in the Home app. Tap your active home hub on the Home tab, then tap the Settings icon
.
Unreachable home hub
If your devices are all on the same network, but your home hub is unreachable, there may be a router setting preventing your home hub from connecting to the network. Check your router configuration for firewall rules and other settings that may be blocking your home hub.
DHCP
DHCP (dynamic host configuration protocol) assigns IP addresses to devices on your network. Each IP address identifies a device on the network and enables it to communicate with other devices on the network and internet.
Your network should have only one DHCP server. If there are multiple DHCP servers on the same network, IP address conflicts might prevent some devices from connecting to the internet or using network resources.
You may also take steps to ensure there are enough IP addresses available for all of the devices on your network, such as reducing DHCP lease time, increasing the client device limit, and replacing an older router with one that is able to assign more IP addresses.
DNS
To easily access websites on the internet, devices need a DNS (Domain Name System) server to translate domain names (such as apple.com) into IP addresses. By default, your router uses the DNS server of your internet service provider (ISP). If your router is configured to use a different DNS server, make sure the IP address of the DNS server is correct.
Peer-to-Peer
Apple TV may not be able to communicate with the other devices on a Wi-Fi network if peer-to-peer traffic is blocked. Peer-to-peer traffic may be blocked on guest networks. If you can, try joining a different Wi-Fi network, or consider enabling peer-to-peer traffic on the router or access point.
NAT
NAT (network address translation) translates between public addresses on the internet and private addresses on your network. Generally, enable NAT only on your router. If NAT is enabled on more than one device, such as on both your modem and router, the resulting “double NAT” might cause devices to lose access to certain resources on the network or internet.