Smart Tube Unknown Source Error 403 Fix (2024)

Are you getting the Smart Tube unknown source error 403? If your answer is YES, don’t worry you are in the right place.

Smart Tube is a YouTube client that allows users to watch and download YouTube videos.

This is a third-party application that users use due to its additional features that YouTube does not have.

Unfortunately, some users are encountering the unknown error code 403 while using the Smart Tube app.

If you are facing the same error and looking for a fix, look no further as we got you covered.

In this guide, you’ll learn what are the possible reasons for getting the Smart Tube unknown source error 403 and how to fix this error.

Possible Reasons For Getting Smart Tube Unknown Source Error 403?

According to the report, this error code appears when the server does not respond to the request or the user does not have access to the server.

This will happen for several reasons, some of the most common reasons are:

  • Down or under maintenance server.
  • Issues with your internet connection.
  • Active VPN.
  • Corrupted cache files.

However, if you encounter the Smart Tube unknown source error 403, you can fix it using the methods below.

So, without any further ado let’s get started:

How to Fix the Smart Tube Unknown Source Error 403?

Here are some troubleshooting methods to fix the Smart Tube unknown source error 403.

Check Server Status

Smart Tube Unknown Source Error 403

If there is any issue with the server, then users cannot access any content on Smart Tube.

So, before you start troubleshooting the Smart Tube unknown source error 403, make sure the server is up.

To do that, you can use the online tool called Downdetector.

This tool will show you the current status of the server based on the reports submitted by other users.

After checking if you find any issue with the server, you have to wait and try again after some time.

Check Your Internet Connection

Smart Tube Unknown Source Error 403

To access any content on Smart Tube, your device needs to be connected with a fast and stable internet connection.

If you are getting a poor internet connection you may encounter issues and errors and cannot access any content.

If there is no issue from the Smart Tube side, you should check your internet connection.

The best way to check internet speed and stability is by performing a speed test.

Use any internet speed testers you want and follow troubleshooting steps if you find any issues.

Disable VPN

Smart Tube Unknown Source Error 403

Sometimes, an active VPN might conflict with the connection between the apps and the server.

If you have a VPN installed on your mobile device then make sure it’s disabled.

Once you disable the VPN restart your device and open the Smart Tube app to check if the error is fixed.

Clear Cache

If you have not cleared the Smart Tube cache files for a long time then it may be possible that they will be expired and cause this error.

If you don’t have a VPN installed and there is no issue with your internet connection, you should consider clearing the cache files. s

To do that, use the following steps:

  • First, open the Settings app.
  • Scroll down and tap on Apps.
  • Here you will see multiple options, select Manage Apps.
  • This will show you all the apps installed on your mobile phone.
  • Scroll down to find the Smart Tube app.
  • Tap on it to open the app settings.
  • Select Storage.
  • Then tap Clear Cache.
Smart Tube Unknown Source Error 403
  • That’s it.

Contact Customer Support

If you have tried everything but still getting the error code 403 on Smart Tube, you should contact Smart Tube’s Customer Support for expert assistance.

That’s it, we hope this guide helps you fix the Smart Tube unknown source error 403.

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