How To Fix ADB Device Unauthorized Error – Comprehensive Guide

The Android Debug Bridge (ADB) is a crucial tool for managing and interacting with Android devices from a computer. It is commonly used for debugging, flashing custom ROMs, rooting devices, and performing various advanced operations. However, like any tool, ADB is not without its issues. One of the most common and frustrating problems that users encounter is the “ADB Device Unauthorized” error, which prevents a proper connection between the device and ADB.

The “ADB Device Unauthorized” error is a significant hurdle that occurs when trying to establish a connection between your Android device and a computer or laptop via ADB. This error blocks ADB from accessing the device, making it impossible to carry out essential tasks such as flashing firmware, debugging apps, or executing shell commands.

In this article, we will explore the underlying causes of the “ADB Device Unauthorized” error and provide you with a step-by-step guide to resolve it. We will delve into multiple troubleshooting methods to help you restore ADB functionality and ensure that your Android device connects correctly to your computer or laptop.

What Causes ADB Device Unauthorized Error

A variety of issues can cause unauthorized ADB device errors. This error usually occurs when the device is not properly connected to the computer via USB or when the USB debugging mode is not enabled. It can also occur if the USB driver is not installed on the computer or if the ADB daemon is not running.

Fix ADB Device Unauthorized Error

Android Debug Bridge (ADB) is a versatile command line tool that lets you communicate with and control an Android-powered device over a USB link from a computer. However, sometimes users may experience an “unauthorized” error message when they attempt to use ADB. Fortunately, this error can usually be resolved with a few simple steps. Here are the methods you need to take to fix the ADB Device Unauthorized error:

Check Your USB Cable

Using a USB cable to fix an ADB Device Unauthorized Error is relatively simple. The Error occurs when a user attempts to connect an Android device to a laptop via USB. The error message indicates that the device cannot communicate with the computer.

To fix this issue, the user must ensure the USB cable is compatible with the Android device. If the cable is incompatible, it cannot establish a secure connection with the device. The USB cable must also be in good working condition, as a faulty cable can cause an error.

Check USB Debugging

When trying to fix an unauthorized ADB error, first, check if USB Debugging is enabled on your Android device. To do this, go to the Settings menu, scroll down to the Developer Options option, and ensure USB Debugging is enabled.

Restart the ADB Server

If you’ve checked that USB Debugging is enabled, and you’re still getting the ADB unauthorized error, you should try restarting the ADB server. To do this, open the command prompt on your computer, type in “adb kill-server” and hit enter. Then, type in “adb start-server” and hit enter again.

Update Your USB Drivers

If you are trying to debug your Android device using ADB and have encountered the error “ADB Device Unauthorized,” you may need to update your USB driver. This error occurs when ADB can’t communicate with your device due to a driver issue. Updating the driver can help ensure your computer correctly recognizes your device. This guide will show you how to update your USB driver.

1. Open the Device Manager on your laptop by searching for “Device Manager” in the Start menu.
2. Locate the USB device causing the error. It is usually listed under the “Universal Serial Bus Controllers” section.
3. Right-click on the device and select “Update Driver” from the menu.
4. Select “Search automatically for updated driver software” and follow the on-screen instructions.
5. Once the driver has been updated, you can use ADB without issues.

Updating your USB driver can be an effective way to resolve ADB Device Unauthorized errors. While the process is relatively simple, it is always best to consult.

Uninstall and Reinstall the ADB Drivers

ADB (Android Debug Bridge) is a command-line tool that allows you to access and control an Android device from a computer. However, sometimes, you may encounter the “ADB device unauthorized” error when connecting a device to your computer via ADB. This error means that your computer does not recognize the device. Fortunately, this issue can usually be resolved by uninstalling and reinstalling the ADB driver. Here’s how:

Step 1: Uninstall the ADB Driver

First, you will need to uninstall the ADB driver from your computer. To do this, open the Device Manager, locate the Universal Serial Bus controllers, and right-click on them. Then select Uninstall Driver to proceed.

Step 2: Download and Install the ADB Driver

Next, you must download and install your device’s ADB driver. The download link is usually found on the manufacturer’s website. Once you download the driver, double-click on it to begin the installation process.

Conclusion

The ADB Device Unauthorized Error is a common issue many Android users experience. Thankfully, there are some easy steps that you can take to fix this error, such as checking your USB cable and USB port or trying toggling the USB Debugging option in your phone’s Developer Options. If that doesn’t work, try restarting your phone and your laptop. Finally, you may have to reset your phone or reinstall the ADB drivers if everything fails. With the steps outlined here, you should be able to quickly and easily fix the ADB Device Unauthorized Error.