YouTube Vanced has long been a favorite alternative to the official YouTube app, offering users an ad-free experience, background playback, and several customization features that the standard app lacks. However, like all third-party applications, it isn’t immune to issues. One of the most frustrating problems users encounter is YouTube Vanced Error 400, typically accompanied by the message: “There was a problem with the server (400).”
This error can prevent you from watching videos, signing in, or even opening the app entirely. Whether you’re a long-time Vanced user or someone who recently installed the app, encountering this issue can be disruptive. Fortunately, the problem is fixable, and with the right steps, you can get back to enjoying your favorite content in no time.
In this detailed guide, we’ll explain what causes Error 400 on YouTube Vanced, and walk you through several reliable solutions to resolve it—step by step.
What is YouTube Vanced Error 400?
Error 400 is a Bad Request error that occurs when the client (your app or device) sends an invalid request to the server. In the context of YouTube Vanced, this typically happens because:
- Your Google account authentication is broken or corrupted.
- The app’s cache or data is damaged.
- The MicroG component used for login is not functioning correctly.
- You’re using an outdated version of Vanced or MicroG.
- There’s a network-related conflict or DNS error.
Essentially, YouTube’s servers are rejecting your request because of something going wrong on your device. Let’s dive into the causes and their fixes.
Top Causes of YouTube Vanced Error 400
Before jumping into the solutions, let’s better understand the common triggers for this error:
- Corrupted Cache and App Data
- Over time, app cache can become corrupted and interfere with proper communication with YouTube’s servers.
- Google Account Sync Issues
- Sometimes your signed-in Google account doesn’t sync well with Vanced due to outdated MicroG or authentication failure.
- Outdated MicroG or Vanced App
- An old version of MicroG or YouTube Vanced may not work correctly with YouTube’s latest server protocols.
- Network Issues
- DNS issues or bad IP caching can result in error 400.
- Improper Installation
- If you didn’t install MicroG correctly or didn’t give proper permissions, the app may fail to authenticate your account.
How to Fix YouTube Vanced Error 400 – Step-by-Step Solutions
1. Clear Cache and App Data
The first and easiest fix is to clear cache and data of YouTube Vanced and MicroG.
Steps:
- Go to Settings > Apps.
- Scroll down to YouTube Vanced.
- Tap Storage & cache.
- Tap Clear Cache and then Clear Storage/Data.
- Do the same for MicroG.
Afterward, try reopening the app. You may need to re-sign into your Google account.
2. Remove and Re-add Google Account in MicroG
Sometimes the problem lies in the authentication layer. Try removing and re-adding your Google account.
Steps:
- Open MicroG Settings.
- Go to Google Account.
- Tap your account > Remove account.
- Reboot your phone.
- Open Vanced again and re-sign in.
This refreshes the account session and can resolve most Error 400 login-related issues.
3. Update MicroG and YouTube Vanced
Outdated apps are a major cause of 400 errors. Make sure you’re using the latest versions.
- Visit the official Vanced website or Vanced Manager GitHub and check for updates.
- Update both:
- MicroG
- YouTube Vanced
Tip: Use the Vanced Manager app to easily check and install updates.
4. Reinstall YouTube Vanced and MicroG (Clean Installation)
If nothing else works, a full reinstall might be necessary.
Steps:
- Uninstall both Vanced and MicroG:
- Go to Settings > Apps.
- Select YouTube Vanced > Uninstall.
- Do the same for MicroG.
- Reboot your phone.
- Download the latest Vanced Manager APK from the official source.
- Use Vanced Manager to:
- Install MicroG first.
- Then install YouTube Vanced (choose between root/non-root version as per your setup).
- Open Vanced and log in again.
This fresh installation often resolves deep-rooted cache or configuration issues causing Error 400.
5. Change DNS Settings (Optional but Effective)
A DNS misconfiguration can result in incorrect server requests.
Use Google DNS:
- Go to Settings > Network & Internet > WiFi.
- Tap your connected WiFi network > Modify.
- Change IP settings to Static.
- Set:
- DNS 1: 8.8.8.8
- DNS 2: 8.8.4.4
Restart YouTube Vanced and see if the error persists.
6. Use an Older Version of YouTube Vanced
Sometimes, the latest version may conflict with certain Android builds or server changes.
Try downgrading:
- Uninstall Vanced.
- Visit APKMirror or trusted forums like XDA Developers.
- Download an older, stable version.
- Pair it with a compatible version of MicroG.
Login again and check if Error 400 is resolved.
7. Switch Internet Connections
Try using:
- A different Wi-Fi network.
- A mobile data connection.
- A VPN (especially if your region blocks some Google services).
Sometimes, the error is caused by ISP-level issues or IP blocks.
8. Check for Ad Blocker Interference
If you use aggressive system-wide ad blockers (like AdGuard, DNS66, or Blokada), they might interfere with YouTube Vanced’s communication with servers.
Try disabling your ad blocker temporarily and reopen Vanced.
If that resolves the issue, whitelist Vanced and MicroG in your blocker settings.
9. Use ReVanced as an Alternative
Since official YouTube Vanced support stopped in early 2022, the community has moved to ReVanced, a modern continuation of the project.
- Visit revanced.io for information.
- You can patch YouTube using ReVanced Manager and install MicroG separately.
ReVanced often offers better compatibility with newer Android versions and YouTube protocols.
Final Thoughts
While YouTube Vanced Error 400 can be incredibly frustrating, it’s rarely a permanent issue. In most cases, the problem stems from outdated versions, cached data, or Google account sync issues. By following the steps above—starting from basic cache clearing to a full reinstall—you can usually resolve the error without much hassle.
Also, with YouTube Vanced development halted, consider switching to ReVanced, the new generation of modded YouTube apps with active development and better long-term support.
It’s important to download apps only from trusted sources and avoid shady modded versions, which might introduce malware or spyware. Always double-check version compatibility and make sure your Google account permissions are properly configured within MicroG.
With the right approach and some patience, you’ll be back to enjoying your ad-free YouTube experience in no time.
FAQs
Q1. What causes the YouTube Vanced Error 400?
It is usually caused by corrupt app data, expired Google login tokens, outdated versions of MicroG or Vanced, or DNS/server request issues.
Q2. Is YouTube Vanced still supported?
No, official development stopped in 2022. However, ReVanced is the modern successor and is actively maintained.
Q3. Will reinstalling MicroG delete my data?
No, but uninstalling YouTube Vanced and MicroG will remove your account info, so you will have to sign in again.
Q4. Is ReVanced better than Vanced?
Yes, ReVanced is currently the best alternative with active updates and improved compatibility with newer devices and Android versions.