How to Fix “There Was a Problem With the Server [400]” Error in the YouTube App

Sep 14, 2025

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The YouTube app is one of the most widely used apps in the world, but sometimes users face a frustrating message: “There was a problem with the server [400]”. This issue can stop videos from loading or comments from posting. In this guide, you’ll learn exactly what causes the error and how to fix it step by step.

🔎 What Causes the [400] Server Error on YouTube?

Corrupted Cache/Data – Outdated login tokens or cached files confuse the app.
Network Problems – Weak Wi-Fi, mobile data restrictions, or DNS issues.
Date & Time Mismatch – Incorrect device clock leads to authentication failures.
Outdated App Version – Old versions may be incompatible with Google’s servers.
VPN/Proxy Interference – Region mismatch or blocked IP ranges.

✅ Step-by-Step Fixes

1. Check Your Internet Connection

Switch between Wi-Fi and mobile data to see if the error persists. Restart your router if needed.

2. Clear YouTube App Cache and Data (Most Effective)

Go to Settings → Apps → YouTube → Storage.
Tap Clear Cache and then Clear Data.
Relaunch YouTube and sign in again.

3. Update the YouTube App

Open Google Play Store (or App Store on iOS).
Search for “YouTube” and tap Update if available.

4. Remove and Re-Add Your Google Account

This resets corrupted authentication tokens:

Go to Settings → Accounts → Google.
Select your Google account → Remove account.
Restart your device.
Add the account back and open YouTube.

5. Reset App Preferences

Sometimes other system settings conflict:

Android: Settings → Apps → Reset App Preferences.
This will reset disabled apps, permissions, and defaults.

6. Verify Date and Time Settings

Enable automatic date & time:

Settings → Date & Time → Automatic.
Incorrect time can cause token mismatches with Google servers.

7. Disable VPN or Proxy

If you’re using a VPN, temporarily turn it off and try again. VPNs often route traffic through IPs that Google blocks.

8. Restart Your Device

A simple reboot clears temporary glitches and refreshes network connections.

📝 Quick Fix Table

Step	Action	Purpose
1	Switch Wi-Fi/Mobile Data	Test network stability
2	Clear Cache/Data	Reset YouTube app session
3	Update App	Fix bugs & outdated APIs
4	Remove/Re-Add Account	Renew credentials
5	Reset App Preferences	Clear hidden conflicts
6	Auto Date & Time	Prevent token mismatch
7	Disable VPN/Proxy	Avoid blocked IP ranges
8	Restart Device	Refresh system resources

💡 Extra Tips

If the error happens only on one account but not another, the issue is almost always with cache or credentials.
If nothing works, uninstall and reinstall the YouTube app completely.

❓ FAQs

Q1. Does this error mean my account is banned?
No. It’s a connection/authentication problem, not a ban.

Q2. Will clearing data delete my YouTube subscriptions?
No. It only logs you out of the app; your subscriptions and history stay tied to your Google account.

Q3. Can I fix this without removing my account?
Yes. Clearing cache/data and updating the app solves it most of the time.

Q4. Why does VPN cause this error?
Because YouTube servers may reject requests from certain VPN IPs.

Q5. Does this affect both Android and iOS?
Yes, but on iOS you’ll need to delete and reinstall the app to clear data.

⚠️ Disclaimer

This article provides general troubleshooting tips for the “There was a problem with the server [400]” error in the YouTube app. Actual fixes may vary by device, app version, and region. Always back up important information before making changes.