supports Windows 11 versions up to 25H2 and Windows Server 2025. Are you attempting an online install offline download of the ADK when this error occurs?
The file extension .msi stands for Microsoft Installer Package. It is a database file used by the Windows Installer service to install, maintain, and remove software. setup cannot locate toolkit documentation-x86-en-us.msi
Don’t worry. This isn’t a sign that your hard drive is failing. It is a specific, well-known pathing issue related to Windows Installer caching. Here is why it happens and, more importantly, how to fix it. supports Windows 11 versions up to 25H2 and
If you are using the Microsoft Deployment Toolkit (MDT) and it's complaining about missing folders after a "successful" (but actually broken) install: Install the Windows ADK offline - Microsoft Learn It is a database file used by the
If all else fails, the Windows Installer core files may be damaged. Use the to perform an in-place upgrade repair.