sorry for the nitpick but it’s 2009! 2007 is more like vista (2006)

i don’t think an old win10 installer would work, microsoft blocked the w7/8/8.1 upgrade path on their servers

KMS is microsoft’s method of product activation mostly for organizations, they can run an activation server inside an intranet for instance. Also widely used for pirating windows since it’s easy to run one of those kms emulators

https://massgrave.dev/ is a fairly recent development, they have a tool called MAS that can activate windows/office/etc using many methods including KMS

it’s all just fediverse anyway tho