[encryptluks2]

The Windows installers are not activated. You need either an OEM key in your firmware, a retail key or a volume activation server.

[seanp2k2]

And https://github.com/massgravel/Microsoft-Activation-Scripts can help with that.

[encryptluks2]

I wouldn't recommend using random public activation servers and hundreds if not thousands of lines of batch scripts. slmgr.vbs and ospp.vbs are your friend.