Q. I recovered my computer from a system crash. License authorization fails with the error message "VOCALOID components for these serial numbers are not installed." (Windows) "Cannot find VOCALOID components assigned to the entered serial number. Please type valid serial number." (Mac)

If you recovered the computer with a backup tool, hard disk clone, Time Machine, or Migration Assistant, the VOCALOID authorizer won't recognize the installation.
Please uninstall all VOCALOID components and reinstall them.

・Uninstall (Windows)
[Start] > [Settings] > [Apps] > [Apps & Features]

・Uninstall (Mac)
[Applications] > [VOCALOID] > [Uninstaller]
[Applications] > [VOCALOID5] > [Uninstaller]

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