This issue is not necessarily an indication of tampering. The most likely reason is that language packs MUI have been installed on computers that are running Windows editions that are not licensed for additional language packs. This issue can occur for several reasons. If it returns an activation error code, the tool will display targeted solutions for known error codes. For more information about volume activation for current and recent versions of Windows, see Volume Activation. For more information about volume activation, see Plan for volume activation. Look for the error code in the following table, and then select the link to see more information about that error code and how to resolve it. If you're looking for more information about Windows activation error messages, see Get help with Windows activation errors. This article is intended for use by support agents and IT professionals.
