Remove Windows 200x Domain Controller from AD in DSRMode
While in DS restore mode open up regedit and navigate to khey_local_machine/system/currentcontrolset/control/productoptions. Change the product type from lanmannt to servernt. Reboot into windows normally. The machine now thinks it’s a member server. Disjoin from the domain, reboot, and do a DC Promo up to a dummy domain. Make sure it’s pointed to itself for DNS resolution, it will aks you…
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