How to Fix ADB_Vendor_Keys Not Set Error

Android fans or developers often choose to use ADB and Fastboot (platform tools) to execute certain commands on their Android devices via computer. You will need to manually enable USB debugging on your phone so that the computer detects it every time you connect it. But some users are facing “ADB_Vendor_Keys”Not Set error when trying to connect to USB Debugging.

Are you also one of them who suddenly encountered this particular error as ADB_VENDOR_KEY? Then don’t worry because this is a common problem among Android devices and it can be easily fixed by setting up some workarounds. There is a high chance that the ADB Vendor Keys error appears due to several possible causes on your Android device.

For example, corrupted or missing files, inaccessible files on the device, and more. So you will get ADB_VENDOR_KEYS specific error in Command Prompt windows, Terminal or even Windows Powershell window. Here in this detailed guide, you will provide methods to fix the ADB_VENDOR_KEYS Not Set error. So, let’s begin.

What are ADB vendor keys?

If we take a quick look at the ADB vendor keys, it basically manages the connection between the computer and the Android device. If you have an ADB server running on your computer and you are trying to connect your Android phone to it via USB debugging mode, then you may encounter these errors due to failed access.

Thus, whenever you are asked to allow USB debugging access on a phone connected to a PC, you are prompted to print the RSA system key to allow access or even deny it. Once you allow access on your Android smartphone, it can be accessed using ADB and Fastboot tools (platform tools) from an authorized/trusted PC.

This will expire when the current session ends and will be allowed again in the future. However, you can set the “always allow”option to automate the request for the future. Once you allow access, the ADB and Fastboot tools will also store ADB_VENDOR_KEYS on the specific PC.

What is the cause of the ADB_Vendor_Keys Not Set error?

Now that you know some brief details about ADB vendor keys for an Android device, you might be wondering what could be the reason why this kind of error occurs quite often. Well, it’s worth mentioning that there are several possible causes or applicable security measures that may arise.

In this scenario, you will be able to manually bypass the ADB and Fastboot tools to perform any task on your phone through your computer. These security measures will help protect your device and user data from intruders. If one of these aspects is not included in the role play, you will have problems running ADB or Fastboot commands on the device.

The “ADB Provider Keys”error is one of the basic and common problems that you should try to fix manually by following this troubleshooting guide. If in this case the file is missing, corrupted, or inaccessible for several reasons, you will have an ADB_VENDOR_KEYS error in a command prompt window, terminal, or Windows PowerShell window.

A vendor key file must be created whenever you enable USB debugging mode via a prompt on the phone. Unfortunately, sometimes the request does not work or the key files become inaccessible.

How to Fix ADB_VENDOR_KEYS Not Installed Error

Having dealt with several aspects and causes of the ADB Vendor Keys error, you should go through all the steps correctly. So let’s get started.

1. Use SDK platform tools

• First, you’ll have to use the official ADB binaries from Google itself.
• Now be sure to download the Android SDK Platform Tools on your PC.
• Then extract Android SDK Platform Tools on PC.
• Connect Android device to PC via USB cable.
• Make sure USB debugging is enabled. For this:
  • Open the Settings app on your phone.
  • Go to the “About phone”section .
  • Click on the build number 7 times in a row to get a successful “You are now a developer”message. This means that you have enabled developer mode on your device.
  • Now go back to the Settings menu again and click on Developer Options .
  • Don’t forget to turn on the “Developer options”toggle at the top.
  • Then turn on the USB Debugging switch . When prompted, select “Allow USB Debugging”and click OK.

• Then go to Android SDK Platform-Tools folder.
• Type CMD in the Windows Explorer address bar and press Enter to open a command prompt.
• It will then launch a CMD window. When prompted, click Yes to allow administrator access.
• Finally, you can try to check if a particular ADB VENDOR KEYS Not Set error is bothering you.

2. ADB vendor keys error in ADB sideload

If in this case you are getting an Android device unauthorized access error when booting your phone in recovery mode, you need to download ADB to easily fix the “ADB vendor keys are not installed” error. To do this, you need to check the connection of the device to the PC via a USB cable and try the command below.

adb устройства

After you type this command and press Enter, you will be able to see the specific device ID on the computer screen (in the command prompt window) to verify that your device is properly connected in adb fastboot mode. Now you can go.

Otherwise, you should unplug the USB cable from your phone and repeat the process again. Sometimes an unrecognized connection or bad port connection can also cause such errors in ADB fastboot mode.

3. Restart the adb server.

Another thing you should do is restart the ADB server by following the steps below to update connection issues in most cases. For this:

• Navigate to the ADB Fastboot Platform Tools folder on the PC.
• Now type CMD in the Windows Explorer address bar and press Enter to open the command prompt.
• You will then need to allow administrator access (if prompted).
• After launching the command prompt window, copy and paste the following command and press Enter to kill the adb server.

adb kill-сервер

• You will then need to copy and paste the following command and press Enter to restart the ADB server manually.

стартовый сервер adb

• After that, you should check again for the ADB VENDOR KEYS Not Set error.

4. Cancel USB Debugging

Vendor keys error can also occur due to USB debugging authorization issue between PC and Android device. Thus, it would be helpful if you tried to revoke authorization access and then re-authorize from scratch to make sure the provider keys work fine. For this:

• Go to the “Settings”menu on your Android device.
• Click “About phone”and click “Build number”7 times.
• This will enable developer options on your phone.
• Then go back to the Settings menu again.
• Click “System”and click “Developer Options”to open it.
• Then click “Revoke USB Debugging Authorization”and click “OK”to confirm it.
• After that, make sure to connect your Android device to PC via USB cable.
• Now navigate to the ADB Fastboot Platform Tools folder on the PC.
• Type CMD in the Windows Explorer address bar and press Enter to open a command prompt.
• Then copy and paste the following command into the CMD window and press Enter to execute it.

adb устройства

• Finally, you will get a confirmation prompt on your Android phone and click “Allow/Authorize”.

Ready. Enjoy! Now you can run your specific commands without any vendor errors. If you have any questions, let us know in the comments.