Sysprep was not able to validate your Windows installation. Review the log file at %WINDIR%\System32\Panther\setupact.log for details. After resolving the issue, use Sysprep to validate your installation again.
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When trying to sysprep Windows 10 you get the error Sysprep was not able to validate your Windows installation. Review the log file at %WINDIR%\System32\Panther\setupact.log for details. After resolving the issue, use Sysprep to validate your installation again. Check the log file, and see if you have a package installed that's blocking sysprep. "2020-02-25 00:01:27, Error SYSPRP Package Microsoft.LanguageExperiencePacken-GB_18362.14.45.0_neutral__8wekyb3d8bbwe was installed for a user, but not provisioned for all users. This package will not function properly in the sysprep image." Determine the name of the package Get-AppxPackage -AllUsers | SELECT PackageFullName, Name Remove the package Get-AppxPackage -AllUsers "Microsoft.LanguageExperiencePacken-GB" |Remove-AppXPackage -AllUsers Run sysprep again