Hello arvid,
Thank you for posting in Q&A forum.
You can use the Volume Activation Management Tool (VAMT) to activate Windows 10 using a Multiple Activation Key (MAK) in an isolated air-gapped network. This method involves using a proxy activation on an internet-connected VAMT host computer.
Here's a detailed guide on how to set this up.
I hope the information above is helpful.
If you have any questions or concerns, please feel free to let us know.
Best Regards,
Daisy Zhou
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