Windows 10 Fall Creator Update 1709 – Sysprep was not able to validate your Windows installation

Hello Reader,

In this post, we will look at a known bug within the Windows 10 Fall Creators Update 1709, where you are unable to perform a sysprep of a Windows 10 workstation running update 1709. This is a little annoying bug which prevents sysprep from running.

The error messages as shown below provides you with a bit of detail and a UNC Folder to check the log file for more information.
Sysprep was not able to validate your Windows installation.
Review the log file at:
%WINDIR%\Systems32\Sysprep\Panther\setupact.log for details. After resolving this issue, use sysprep to valiate your installation again.

This error seems to be caused by Windows 10 Store Apps updating within the background, we can prevent this from happening by adding the following reg key either by using regedit or Powershell. As I am a big avodate of PowerShell I will using show the deployment and removal of this key using PowerShell.

Identifiying the Windows 10 Applications.

Using the path provided within the sysprep error message you will be able to easily identify the problem application, this is case the problem was being caused by the SketchBook application. Once removing SketchBook app the problem persisted as a number of other apps needs to be removed also.

Video demostration.

You can find a video of each application being removed until sysprep was able to successfully execute.

We hope that this post has helped your issue.


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