This error typically occurs during the installation of the Windows Assessment and Deployment Kit (ADK)

msiexec /a installer.msi TARGETDIR=C:\extracted_msi /qb

If you are a developer and this error appears when trying to or package your own toolkit:

Are you encountering the frustrating "Setup cannot locate toolkit documentation" error while trying to install or update a software package, specifically when dealing with the x86_ENU.msi file? This issue can occur due to various reasons, including corrupted installation files, missing dependencies, or incorrect installation paths. In this post, we'll guide you through potential solutions to resolve this error and successfully complete your installation.