Errors with the server connection are a sign that your connection is unstable. Turn off your wireless or cellular connection and put your phone in Aeroplane mode for a couple of minutes. Restart your phone, activate your connection once more, then open YouTube once more. Ideally, try an alternative connection and see if it makes a difference.
Improper date and time settings can potentially result in server issues. Tap Date and time after choosing General management under Settings. Turn on Automatic date and time settings, reopen YouTube, and see if error 400 still occurs.
Ensure that the only app operating on your Android device is YouTube. Go to Settings, press Apps, and then pick YouTube. Check to see if the issue has been resolved by tapping Storage and selecting the Clear cache option.
Additionally, confirm that you are utilising the most recent app version. Open the Google Play Store app, type "YouTube" into the search bar, then click Update. If a newer version of Android is available, install it, restart your device, then open YouTube once more.
Modify the DNS settingsSome users manually changed their DNS settings to resolve this issue. Go to Settings, select Wi-Fi, and then hold down the long-press key on the network you want to access. Go to IP settings, choose Modify Network, then set 1.1.1.1 as your primary DNS server.
Uninstall and reinstall your YouTube app if the issue continues.
ConclusionYouTube error 400 typically means that your connection is unreliable or that your date and time settings are off. Additionally, make sure your Android device is running the most recent version of the YouTube app by checking for updates.
The best way to Fix YouTube not Working is by contact YouTube Support Number +1-888-625-2848.