[Samba] Domain Level and Forest Level raise

Anantha Raghava H A raghav at exzatech.net
Tue Aug 15 02:04:54 UTC 2023


We have a test environment with Samba Version 4.18.5 which is set to 
Forest, Domain and lowest function Level of 2008 R2. I am trying to 
raise the forest and domain levels.

However, when I try to raise the domain level, I get an error - "ERROR: 
Domain function level can't be higher than the lowest function level of 
a DC!" and when I try to raise the forest level I get an error - "Forest 
function level can't be higher than the domain function level(s). Please 
raise it/them first!".

 From this what I understand is we have to first raise the lowest 
functional level to 2012 R2 before raising domain level and finally 
raise the forest level.

But how do we raise the lowest function level using samba-tool or Active 
Directory Domains and Trusts tool? I am not able to find any reference 
or documentation. Or do we have to set it while provisioning the DC?


Thanks & Regards,

Anantha Raghava H A

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