Windows 11 installer failed to validate product key

0

by Loredana Harsana

Windows & Software Expert

Loredana is an avid writer with a keen interest in PC software and technology. She started writing about mobile phones back when the Samsung Galaxy S II was on top of the world and… Read more

  • The Windows 11 installation error could not validate the product key seems to be caused by a missing configuration file.
  • Another cause could be third-party antivirus software interfering.
  • You should know that not all antivirus software causes redundant errors.

Windows 11 product key setup failed to validate product key

XINSTALL BY CLICKING ON THE DOWNLOAD FILE

To fix various PC problems, we recommend Restoro PC Repair Tool:
This software will repair common computer errors, protect you against file loss, malware, hardware failure, and optimize your PC for maximum performance. Solve PC problems and remove viruses now in 3 easy steps:
  1. Download Restoro PC Repair Tool that comes with patented technologies (patent available here).
  2. Click on Start analysis to find Windows issues that could be causing problems for the PC.

  3. Click on fix everything to troubleshoot issues affecting the security and performance of your computer

  • Restoro was uploaded by 0 readers this month.

Users who attempted to perform an in-place update using the Windows 11 ISO received the error notice Installer failed to validate the product key during installing Windows 11.

This can happen for a variety of reasons, including the presence of an unzipped installer in the temporary folder or the interference of a third-party antivirus application, among others.

Whatever the underlying issue, we’ll walk you through the process and show you how to fix the error message in question relatively easily in this article. But first, let’s take a closer look at what could have caused the problem. To follow!

Why Windows 11 Setup Failed to Validate Product Key Error?

We have listed the possible causes for the product key setup failed error in Windows 11, however, keep in mind that there can be other causes as well:

  • Third-party antivirus – It happens when the antivirus program interferes with the installation process and hence generates an error message. To fix this issue, you will just need to disable your antivirus software on your computer system.
  • Missing configuration files – It turns out that the first instance in which the error notice appears is when you do not have a critical configuration file required for installation on your computer. In this case, you will have to rebuild the configuration file.
  • Faulty temporary files – In this case, you will need to use the Disk Cleanup tool on your computer to remove all temporary files that have accumulated on your computer’s hard drive.

Expert tip: Some PC issues are hard to fix, especially when it comes to corrupt repositories or missing Windows files. If you are having trouble fixing an error, your system may be partially damaged. We recommend installing Restoro, a tool that will scan your machine and identify the problem.
Click here to download and start repairing.

Without further ado, let’s wrap this up with troubleshooting the installation failed to validate product key error in Windows 11. Follow along!

How can I fix the installer failed to validate the product key in Windows 11?

1. Disable your antivirus

  1. Press the arrow on your taskbar to expand the icons and right-click on your antivirus then choose Avast Shield Control followed by Disable for 10 minutes.disable-antivirus-icon xbox controller not recognized windows 11
  2. In case you have installed other antivirus software, you can disable it temporarily by following the same steps as above or similar steps.avira-disable-icon xbox controller not recognized windows 11

Note that not all antivirus software causes problems with the product key activation process or any other system activity. One of them is ESET which provides high quality anti-virus and anti-malware protection without interfering with internal procedures.

2. Create a missing configuration file

  1. Open the search field and type Notepad. Right-click on the top result and choose Execute as administrator.notepad-admin windows 11 setup failed to validate product key
  2. After that, copy-paste or type the following text into the file: [EditionID] [Channel] Retail [VL] 0Windows 11 installer with notepad code failed to validate product key
  3. You will now need to download the Windows 11 ISO from Microsoft and extract the folder.Windows 11 installer in sources folder failed to validate product key
  4. Once you’ve done that, save the Notepad file to the Sources subfolder under Windows 11 ISO folder and name it ei.cfg.Windows 11 installer in sources folder failed to validate product key
  5. Finally, run the installer file from the ISO folder and see if the error still occurs.

3. Perform Disk Cleanup

  1. Start by opening the Windows search box and typing Disc cleaning and access it.Windows 11 Disk Cleanup installer failed to validate product key
  2. Choose the system drive you need to clean, which is usually VSthen click Okay in order to start the search process which will search for redundant files.
  3. Once the process is complete, click Clean up system files and choose the VS drive again.Windows 11 cleanup program failed to validate product key
  4. After displaying the result, check the Temporary files and Temporary Internet Files boxes then click Okay to delete these files.Windows 11 setup delete temporary files failed to validate product key

For more information and potential solutions, see our article on what to do if you can’t activate your copy of Windows 11.

You can also find out how to fix Windows 10/11 activation key not working to find more solutions and explanations for this error.

And as a bonus, users have found it useful after reading how to activate Windows 11 in a virtual machine. Don’t miss it either!

In order to improve our future articles, leave us a comment in the section below and tell us what you think of our solutions. Thanks for reading!

restaurant idea Still having problems? Fix them with this tool:
  1. Download this PC Repair Tool rated Excellent on TrustPilot.com (the download starts on this page).
  2. Click on Start analysis to find Windows issues that could be causing problems for the PC.
  3. Click on fix everything to solve problems with patented technologies (Exclusive discount for our readers).

Restoro was uploaded by 0 readers this month.

Share.

Comments are closed.