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https://www.vspbreda.nl/nl/workstation-os/solved-when-using-a-volume-activation-management-tool-vamt-3-1-the-specified-product-key-is-invalid-of-is-unsupported-by-this-version-of-vamt-an-update-to-support-additional-products-may-be-a/
[SOLVED] When using a Volume Activation Management Tool ( VAMT ) 3.1: The specified KMS product key is invalid, of is unsupported by this version of VAMT. An update to support additional products may be available online. When adding Windows 10 product keys