Chromecast can fail at the Wi-Fi screen, vanish from Google Home, or show offline after setup. Start with close-range setup, then check the router, Google Home permissions, the selected network, and router settings that let devices see each other. Factory reset belongs at the end, after the connection path and network rules are clean.
Move the streamer closer before changing settings
The most common cause to remove first is a weak Wi-Fi link between the streaming device, router, and setup phone.
Move the Chromecast or Google TV Streamer within 20 feet of the Wi-Fi router.
Keep the phone or tablet used for setup close to the streaming device while Google Home connects it.
Move the streaming device away from the TV body, wires, cables, and nearby electronics, and make sure it is not touching other devices or cables.
Check whether the router is offline
Use this when Chromecast fails at the Wi-Fi step and other devices cannot join the same network. The streaming device cannot complete setup on a network that is down or unstable.
Connect another phone, tablet, or computer to the same Wi-Fi network.
If that device cannot connect, check router signal strength, install pending router firmware, or contact your ISP or router manufacturer.
Disconnect the Wi-Fi router from the outlet for 2 minutes.
Confirm the router LEDs are off, remove backup battery packs if the router has them, then plug the router back in.
Wait until the LEDs are back on and the SSID appears, then try Chromecast setup again.
Allow Google Home to find devices
On iPhone or iPad, open Settings > Bluetooth and turn Bluetooth on.
Open Settings > Privacy & Security > Location Services and turn Location Services on.
Open Settings > Google Home and turn on Location, Bluetooth, and Local Network under Allow Google Home to access.
On Android, open Settings > Connected devices > Connection preferences > Bluetooth and turn on Use Bluetooth.
Open Settings > Location and turn on Use location.
Open Settings > Location > Home and allow Home to use your location.
During Android setup, allow Google Home to use Location, Bluetooth, and Camera when prompted.
If Google Home was already open, close and reopen it before you retry setup.
Pick the right Wi-Fi network and band
The most common network-name mistake is joining the wrong SSID when a router broadcasts separate 2.4 GHz and 5 GHz networks.
During setup, select the Wi-Fi name you want Chromecast or Google TV Streamer to use.
If the router shows separate names such as Home2 and Home5, choose the band that fits your model.
Chromecast 2nd gen, Chromecast 3rd gen, Chromecast Ultra, Chromecast with Google TV, and Google TV Streamer support 2.4 GHz and 5 GHz. Chromecast 1st gen does not list 5 GHz networks, and Google says support for that generation has ended.
After setup, put the phone and streaming device on the same Wi-Fi network.
On Google TV Streamer, open All settings > Network & Internet to check the current network.
On Chromecast with Google TV, open the account icon > All settings > Network & Internet to check it.
On Chromecast 2nd gen, Chromecast 3rd gen, Chromecast Ultra, or Chromecast Audio, open Google Home > Home > All devices, touch and hold the device tile, then open Settings > Device information > Wi-Fi.
Add a hidden Wi-Fi network manually
Use this when your Wi-Fi name is hidden and never appears in the normal setup list. Have the exact network name, security type, and password ready before you start.
For Chromecast 2nd gen, Chromecast 3rd gen, Chromecast Audio, and Chromecast Ultra, wait for Choose Wi-Fi network in Google Home, select Other, and enter the network name, security type, and password.
For Chromecast with Google TV or Google TV Streamer, open All settings > Network & Internet > Add a new network.
Enter the hidden network details with the remote D-pad.
For voice input, hold the Google Assistant button on the Chromecast with Google TV remote or the Microphone button on the Google TV Streamer remote while entering information.
Refresh Google Home and the setup link
When Google Home cannot find the Chromecast or keeps failing setup, reset the setup path in this order.
- 1.Open the Google Home Play Store page on Android or the Google Home App Store page on iPhone/iPad, then tap Install, Update, or Get as shown.
- 2.Force close Google Home, reopen it, and try setup again.
- 3.Open the phone's Settings app, tap Wi-Fi, connect to the Chromecast setup SSID, then return to Google Home and set up the device again.
- 4.Turn off the setup phone or tablet, wait about one minute, turn it back on, then reopen Google Home.
- 5.Use a different supported iPhone, iPad, Android phone, or Android tablet with Google Home installed.
- 6.Reinstall Google Home if the app still fails: use Google Play Store > Profile icon > Manage apps & devices > Manage > Google Home > Uninstall on Android, or Google Home > Remove App > Delete App > Delete on iPhone/iPad, then tap Install or Get in the store.
Switch setup to the TV or forget old Wi-Fi
For Chromecast with Google TV, choose Set up on TV instead during setup, use the Voice Remote D-pad to select the Wi-Fi network, enter the password, and continue on screen.
For Google TV Streamer, choose Set up on TV, select the Wi-Fi network with the directional pad, enter the password, sign in to your Google Account, choose Accept, and continue until Setup here is finished.
When Chromecast with Google TV or Google TV Streamer is already connected to an old network, open Settings > Wi-Fi network > [network name] > Forget network, then set up the new network.
For Chromecast 2nd gen, Chromecast 3rd gen, Chromecast Ultra, and Chromecast Audio, keep the phone on the same account and old Wi-Fi, then open Google Home > Devices, touch and hold the device tile, and tap Settings > Device information > Wi-Fi > Forget this network.
Avoid public Wi-Fi and blocked networks
This fixes networks that block Chromecast discovery, require browser sign-in, or use an unsupported enterprise setup.
Do not set up Chromecast or Google TV Streamer on hotel, school, dormitory, business, or public Wi-Fi that requires a web sign-in page.
Connect it to home Wi-Fi or another secure network whose password you have. A phone's mobile hotspot is worth trying as a temporary test of whether the streaming device can join any Wi-Fi network at all, though Google says hotspots are not fully supported and depend on carrier signal, interference, and your data plan.
For Chromecast with Google TV or Google TV Streamer, use a secure wireless network with the password available instead of WPA2 Enterprise.
Open your router or Wi-Fi extender admin page and turn off Access Point isolation, Client Isolation, or Guest Mode isolation for the Chromecast network.
Do not use computer setup, which Google does not support, and do not count on WPS button pairing, because Google publishes no WPS setup flow and lists WPS only on the Chromecast Ultra spec sheet as a wireless security type rather than a setup path. Google setup uses Google Home, Set up on TV, manual network entry, or Ethernet.
Plug Ethernet directly into the RJ45 port on the back of Google TV Streamer when Wi-Fi is the problem.
For Chromecast with Google TV, connect a compatible Ethernet power adapter to the Chromecast and router.
For Chromecast Ultra, use the Ethernet port on the included power adapter.
For other compatible Chromecast models, use Google's Chromecast Ethernet adapter.
Reset Chromecast only after the basics fail
The most common reset-worthy cause is a bad saved network or stuck setup state that survives the placement, router, permission, and network fixes above.
Reboot the device first: unplug the power cable from the Chromecast or Google TV Streamer, leave it unplugged for one minute, then plug the power cable back in.
Do not rely on unplugging only the HDMI connector; Google says the device must be disconnected from power.
On Chromecast with Google TV, restart from the TV by opening Settings > System > Restart > Restart.
On Google TV Streamer, restart from the TV by opening All settings > System > Restart.
If restart fails, factory reset Chromecast with Google TV or Google TV Streamer from the TV by opening your profile > All settings > System > About > Factory reset.
For Chromecast 2nd gen, Chromecast 3rd gen, or Chromecast Ultra that is still reachable on the same network, factory reset in Google Home by opening Home > All devices, touching and holding the device tile, and tapping Settings > More > Factory reset > Factory reset.
On Google TV Streamer, factory reset with the device button by holding the button on the back for 10-12 seconds until the LED blinks yellow, then releasing when it turns solid white.
On Chromecast with Google TV, factory reset with the device button by holding the button on the back of the Chromecast until the LED blinks yellow, then releasing when it turns solid white.
On Chromecast 2nd gen, Chromecast 3rd gen, or Chromecast Ultra, factory reset with the side button by holding it until the LED blinks orange, then releasing when it turns solid white.
Frequently Asked Questions
Why does Chromecast see my Wi-Fi but fail after I enter the password?
Fix distance first, restart the router, and select the exact SSID you want. Then confirm Google Home has Bluetooth, location, and local network access on the setup phone.
Can I set up Chromecast from a computer?
No. Google says Chromecast setup on a computer is not supported, so use a mobile device or the supported Google TV on-screen setup path.
Can Ethernet replace Wi-Fi for Chromecast setup?
Yes, on supported hardware. Google TV Streamer has a built-in RJ45 Ethernet port, Chromecast with Google TV needs a compatible Ethernet power adapter, and Chromecast Ultra includes Ethernet on its power adapter.
Should I reset iPhone network settings for Chromecast setup?
Use it only when the iPhone or iPad itself cannot connect reliably. Open Settings > General > Transfer or Reset [device] > Reset > Reset Network Settings; this removes saved Wi-Fi networks and passwords, cellular settings, VPN, and APN settings.