Tips & Tricks

How to Fix the ADB Device Unauthorized Error

This guide will show you how to fix the ADB Device Unauthorized error. The ADB tool, which stands for Android Debug Bridge, is a great tool that lets users carry out actions on their Android device using a computer. Android developers and enthusiasts alike use it for many purposes. These include debugging, flashing ROMs, installing APKs, and much more.

Although it has many uses, it sometimes doesn’t work correctly and presents errors. One such issue is the ADB device unauthorized error. This problem is usually faced when users attempt to connect their devices to the ADB tool. 

This error is very irritating and prevents users from using the ADB tool to connect their devices to their computers. They are unable to access their device through their computers and carry out certain actions. Here, we will be discussing what causes the ADB device unauthorized error and look over some possible methods to fix the issue.

ADB device unauthorized error

What Causes the ADB Device Unauthorized Error

There are multiple errors faced while using ADB tools and these are caused by multiple issues. Usually, the error under discussion is usually faced when your device isn’t properly connected to your computer through the USB cable.

Apart from that, you will also face the error if you haven’t enabled USB debugging on your device. Also, an incompatible USB driver could also be the culprit. 

Also read: Google Play System Update for 2023

Fix ADB Device Unauthorized Error

As we mentioned previously, the Android Debug Bridge is a flexible command line tool that you can use on your computer to control your Android device, by linking the two using a USB cable.

But there are some errors that one faces while using the tool, an example of which is the ADB device unauthorized error. But don’t worry, this error can be fixed by following a few simple steps. Below, we have discussed some troubleshooting methods that you can try to fix the ADB device unauthorized error:

Check Your USB Cable

Using the ADB tool requires you to connect your Android phone to your computer using a USB cable. If you see the error, then this probably means that your device is not authorized to communicate with the computer. 

To make sure that the USB cable isn’t causing the issue, you must check whether the USB cable is compatible with your device or not. An incompatible USB will not allow you to carry out your tasks. Also, it goes without saying that the USB cable should not be worn out or torn. 

Check USB Debugging

Another thing you could check is the USB Debugging option. In order to make it work, USB debugging should be enabled on your device. So in order to do so, first enable Developer options on your phone. Once done, scroll down to the Developer options section and enable USB Debugging. 

Restart the ADB Server

If the ADB device unauthorized error is still not fixed for you, then you should try restarting the ADB server. This can be done by opening the command prompt on your computer, and then typing “adb kill-server” in the command line. Once done, type “adb start-server” and press enter to restart the ADB server. 

Update USB Drivers

Another possible fix would be updating your USB drivers. The ADB device unauthorized error may be because your USB driver isn’t updated. This prevents your Android phone from communicating with your computer.

USB drivers make sure that your computer can recognize your device, hence it is a must that you keep your USB drivers updated. Follow the given steps to do so:

  1. Search for Device Manager in the Start menu and open it up.
  2. Look for the USB device that you have connected that is presenting the ADB device unauthorized error. 
  3. Once you find the concerned device, right-click on it and click on the Update Driver option. 
  4. Now select “Search automatically for updated driver software” and then follow the instructions provided on the screen. 

After your driver has been updated, you will probably be able to use the ADB tool without facing issues. 

Reinstall the ADB Drivers

If none of the above methods work for you, you should try reinstalling the ADB drivers. First, you will need to uninstall the ADB driver from your computer. You can do so by going to Device Manager > Universal Serial Bus controllers and right-clicking on it. Now, click on Uninstall Driver. 

Now you need to download and install the ADB driver for your device on your computer again. These drivers can be found on the manufacturer’s website. After you have downloaded the driver, begin the installation by double-clicking on it. 

So that was it from our side on how to fix the ADB device unauthorized error. We hope that you found this guide helpful. Let us know what you think in the comment section below.

Uzair Hussain

Uzair Hussain is a dedicated writer who loves to read and research about android phones and technology. Has always enjoyed exploring further into tech and likes to share his knowledge through publishing writings.

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