Hi, @Anonymous
Thank you for posting in Microsoft Q&A forum.
Have we tried the suggestion in below link:
https://www.reddit.com/r/sysadmin/comments/d2t34t/best_way_to_disable_netbios_in_mdt/
(Please Note: Since the website is not hosted by Microsoft, just for your reference.)
Add a step in the task sequence: wmic /interactive:off nicconfig where TCPIPNetbiosOptions!=2 call SetTCPIPNetbios 2
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