YouTube stops working on your TV for five main reasons: your internet connection dropped, the app needs an update, your TV's memory is full, YouTube's servers are down, or your account has a sign-in problem
The fastest way to narrow down which one is happening is to restart your TV completely—not just the remote, but a full power cycle. Unplug it for 30 seconds, plug it back in, and wait for it to fully boot. This fixes about half of all streaming problems because it clears the app's temporary files and resets your connection.
If that doesn't work, the next step depends on what you see on the screen. If YouTube loads but videos won't play, your internet is the problem. If the app won't open at all, it's usually an update or storage issue. If you see an error code, that tells you exactly what's wrong.
Key Takeaways
- A full power cycle—unplugging your TV for 30 seconds—fixes most YouTube problems because it clears the app's cache and resets your connection.
- Check your internet speed by running a speed test on your phone or computer; YouTube needs at least 2.5 Mbps for HD video and 5 Mbps for 4K.
- Update the YouTube app through your TV's app store, and clear the app's cache by going to Settings > Apps > YouTube > Storage > Clear Cache.
- If you see an error code, write it down and search it on Google along with your TV brand—error codes tell you the exact problem.
- If YouTube works on your phone but not your TV, the problem is your TV's connection or the app itself, not your account.
Check your internet connection first
YouTube needs a stable connection. If your TV is connected to WiFi, move closer to your router or switch to a wired connection if your TV has an ethernet port. A wired connection is more stable and faster than WiFi, especially if other devices are using your network.
Test your speed by opening a browser on your phone or computer and searching "speed test." YouTube recommends at least 2.5 Mbps for HD video and 5 Mbps for 4K. If your speed is lower, restart your router by unplugging it for 30 seconds. If the speed is still too low, you may have too many devices on your network—disconnect a few and test again.
If your internet works on other devices but not on YouTube, your TV's connection to the network is the problem. Go to your TV's Settings, find Network or WiFi, and forget the network. Then reconnect by entering your password again. This forces your TV to establish a fresh connection.
Update the YouTube app and clear its cache
Apps need updates to work properly. On most TVs, go to your app store (called Google Play Store on Android TVs, or the equivalent on Samsung, LG, or Roku), search for YouTube, and check if an update is available. If one is, install it. Then restart the app.
If the app is already up to date, clear its cache. This removes temporary files that can corrupt the app's behavior. Go to Settings > Apps > YouTube > Storage > Clear Cache. Do not select "Clear Data"—that will sign you out and delete your watch history. After clearing the cache, restart the app.
If YouTube still won't open, uninstall the app entirely and reinstall it from your app store. This is a last resort for the app itself, but it works when updates and cache clearing don't.
Check for server outages and error codes
YouTube's servers occasionally go down. If you see a message like "Something went wrong" or "Try again later," YouTube's service may be temporarily unavailable. Check on your phone or computer—if YouTube doesn't work there either, the outage is on YouTube's end, not yours. Wait 15 to 30 minutes and try again.
If you see a specific error code—like 400, 403, 500, or 503—write it down. Search Google for that code plus your TV brand. Error codes are YouTube's way of telling you exactly what went wrong. A 403 error usually means a sign-in problem. A 500 or 503 error usually means YouTube's servers are overloaded. A 400 error usually means your TV's date and time are wrong.
If your TV's date and time are incorrect, go to Settings > System > Date and Time and set them to automatic. An incorrect date can block YouTube from connecting securely.
Sign out and sign back in
Account problems can prevent YouTube from loading. Go to Settings > Accounts > Google and select your account. Choose "Remove account" to sign out completely. Then go back to YouTube, and it will prompt you to sign in again. Enter your email and password carefully—a typo will block you.
If you don't remember your password, use your phone or computer to reset it through Google's account recovery page before you try signing in on your TV. If you have two-factor authentication enabled on your Google account, you may need to generate an app password specifically for your TV. Google will walk you through this when you try to sign in.
After signing back in, wait a few minutes for your account settings to sync to your TV. Then try playing a video.
Free up storage space on your TV
If your TV's storage is full, apps won't work properly. Go to Settings > Storage or Settings > Apps and check how much space is available. If you have less than 1 GB free, delete apps you don't use. On most TVs, highlight an app and press the delete or remove button on your remote.
You can also clear cached data from other apps. Go to Settings > Apps, select each app, and choose "Clear Cache." This doesn't delete the app or your data—it just removes temporary files. Do this for several apps if your storage is very low.
Streaming apps like YouTube, Netflix, and others can accumulate large cache files over time. Clearing cache across multiple apps can free up several gigabytes of space.
Restart your router and modem
Your internet equipment can get stuck in a bad state. Unplug your modem (the device your internet provider gave you) and your router (the WiFi device) for 30 seconds. Plug the modem back in first and wait for its lights to stabilize—usually 1 to 2 minutes. Then plug in the router and wait another 1 to 2 minutes for it to fully boot.
This is different from a TV restart, but it's just as important. Your modem and router handle the connection between your TV and YouTube's servers. If they're stuck, restarting them clears their memory and forces them to reconnect fresh.
After restarting both devices, try YouTube again. If it works, you're done. If it doesn't, the problem is either your TV's app or your account, not your internet hardware.
When to contact your TV manufacturer or internet provider
If you've done all the steps above and YouTube still won't work, the problem is likely a hardware issue with your TV or a problem with your internet service that requires professional help. Contact your TV manufacturer's support line with the error code you saw (if any) and the steps you've already tried. They can tell you if there's a known issue with your TV model.
If YouTube works on your phone but not your TV, and you've restarted everything, the problem is your TV's WiFi or ethernet hardware, not YouTube itself. Your TV manufacturer can help you troubleshoot the connection or tell you if the hardware needs repair.
If YouTube doesn't work on any device in your home, contact your internet provider. They can check whether your connection is stable and whether they're blocking YouTube for any reason.
Frequently Asked Questions
Why does YouTube work on my phone but not my TV?
Your TV's connection or the YouTube app on your TV is the problem, not your account or internet service. Try the steps above: restart your TV, update the YouTube app, clear its cache, and restart your router. If YouTube still won't work on your TV but works everywhere else, your TV's WiFi hardware or the app itself needs repair or reinstallation.
What does error code 400 mean on YouTube?
Error 400 usually means your TV's date and time are set incorrectly. Go to Settings > System > Date and Time and turn on automatic date and time. This allows your TV to sync with the correct time, which YouTube needs to connect securely. Restart YouTube after you fix the date and time.
Can I use YouTube on my TV without WiFi?
No, YouTube requires an internet connection. If your TV has an ethernet port, you can plug in a wired connection instead of using WiFi. A wired connection is often more stable. If your TV doesn't have an ethernet port, you must use WiFi or a WiFi adapter.
How long does it take YouTube to come back online after an outage?
YouTube outages usually last 15 to 30 minutes, but they can last longer. Check on your phone or computer to see if YouTube is down everywhere. If it is, wait and try again in 30 minutes. If YouTube works on other devices but not your TV, the problem is your TV, not an outage.
Will clearing the YouTube app's cache delete my watch history?
No. Clearing cache removes only temporary files. Your watch history, subscriptions, and saved videos stay on your Google account. If you want to delete your watch history, you have to do that separately in YouTube's settings on your phone or computer.