YouTube Server Error 400: How to Fix?

Last Updated on November 3rd, 2025 at 5:48 pm

Cover - YouTube Server Error 400

Sometimes, users encounter frustrating issues while streaming, and one of the most common problems lately is the YouTube Server Error 400. This error can make the platform unresponsive, stop videos from loading, or even prevent comments from appearing.

But what exactly causes YouTube Server Error 400, and how can you fix it? In this guide, we’ll break down the main reasons behind the error and walk you through simple, effective solutions to get your YouTube app running smoothly again.

Keep reading to learn how to fix YouTube Server Error 400 quickly and get back to uninterrupted streaming!

1. Disable Restricted Mode on YouTube

YouTube includes a Restricted Mode to filter mature content, and sometimes, it triggers error 400 when accessing certain links. Disabling this mode could resolve the issue. Here’s how:

1. Open the YouTube app and tap your profile icon in the top-right corner.

2. Navigate to Settings -> General.

YouTube Server Error 400 - turn off restricted mode

3. Scroll down and toggle off the “Restricted Mode” option.

4. Close the YouTube app and reopen it. This should resolve the Server Error 400 in the YouTube app.

YouTube Server Error 400 - turn off restricted mode 2

2. Update the Timezone on Your Phone

Incorrect time and date settings can also trigger server error 400 in the YouTube app. To resolve this issue, update your smartphone’s time and date settings to match your time zone. Here’s how:

For Android users:
1. Open the Settings app and navigate to “System settings.”
2. Select “Date & time.”
3. Enable both “Set time automatically” and “Set time zone automatically” options to use the SIM service for automatic updates.
4. If the synced data is incorrect, manually set the time and date.
5. Close the YouTube app and reopen it to check if the server error 400 persists.

For iPhone users:
1. Go to Settings -> General -> Date & Time.
2. Toggle on the “Set Automatically” option.

Following these steps should resolve the server error 400 on YouTube for both Android and iPhone users.

3. Enable Data Usage

Certain Android devices have built-in settings to control data usage for individual apps. If this feature is enabled for YouTube, it could lead to server error 400. Here’s how to disable it:

1. Long-press the YouTube app icon on your phone and select “App info.”
2. Scroll down and tap on “Restrict data usage.”
3. Untick the box next to “Mobile data” and confirm by tapping “OK.”
4. Reopen the YouTube app to see if the error 400 persists.

4. Update your YouTube app

1. Open the Play Store/iOS App Store and search for the YouTube app.
2. If there’s a pending update, you’ll see an “Update” button. Tap on it.
3. Allow the app to update, then launch the YouTube app. It should now function properly without any errors.

5. Clean YouTube Data and Cache

If you’re still encountering server error 400 on the YouTube app, try clearing its data and cache. Note that this will remove all downloaded YouTube videos from the app. Here’s how:

1. Press and hold the YouTube app, then select “App info” on Android.
2. Tap on “Storage usage.”
3. Select “Clear data” and “Clear cache.”
4. Re-launch the YouTube app, and the server error 400 should be resolved.

6. Restart the phone

If you’ve tried all the methods mentioned and you’re still encountering server errors on YouTube, try rebooting your Android or iOS device. This could potentially resolve the error. Additionally, try using mobile data to see if the error persists. If it doesn’t, there may be DNS blockers configured in your Wi-Fi router causing the issue. Consider resetting your router or changing the DNS settings.

Final thoughts

In conclusion, running into a YouTube Server Error can interrupt your video streaming, but fortunately, it’s usually quick to fix. By understanding the causes and exploring the solutions we’ve discussed—such as clearing your browser’s cache, checking your internet connection, or tweaking device settings—you can solve the problem and get back to your video-watching without much hassle. Keep your browser and apps updated and ensure your systems are secure to avoid this error in the future. With these simple steps, you can ensure a smooth and enjoyable YouTube experience, free from disruptions.

FAQs

1. What causes YouTube Server Error 400?

This error typically occurs due to incorrect time settings, restricted data usage, corrupted cache, or outdated app versions. In some cases, Wi-Fi DNS or restricted mode settings can also block YouTube servers. Fixing these configuration issues often resolves the error immediately.

2. Can a poor internet connection cause YouTube Server Error 400?

Yes, unstable or weak internet connections can lead to failed requests between your device and YouTube’s servers, resulting in error 400. Try switching to a different network, toggling airplane mode, or restarting your router to test connectivity before troubleshooting further.

3. Will clearing cache delete my YouTube account or subscriptions?

No, clearing the cache only removes temporary files stored on your device. Your account, subscriptions, playlists, and viewing history remain safe because they’re stored on YouTube’s servers. However, downloaded offline videos will be removed and may need to be redownloaded.

4. What should I do if none of these fixes work?

If the error persists after trying all solutions, consider uninstalling and reinstalling the YouTube app. This ensures that no corrupted files remain. You can also check YouTube’s server status via platforms like DownDetector to confirm if the issue is widespread.

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