Extension: Domain function level

Hi everybody again,

Could be a problem that AD Schema is 88 which correspond to WS2019 and my 
functional schema is 2016?




--

Greetings, ladas



---------- Původní e‑mail ----------
From: ladas via samba <[email protected]>
To: [email protected]
Date: 18. 4. 2026 8:57:42
Subject: [Samba] Domain function level
" 
Hi everybody, 




I would like to ask for advice how to repair Domain level error, if it is 

possible. 

Short intro first: 

I installed two devuan based severs with samba 4.22.8 last month. I 
configured 

samba-ad-dc, upgraded schema to 2016, everything looked good. This is not my



first installation. Yesterday I returned back to the tasks and plane to 
connect 

PCs, NAS, ... and strat production use, but when I made last check I 

discovered the error at primary controller: 




ERROR: Domain function level is higher than the lowest function level of a 
DC. 

Correct this or reprovision! 




I checked the smb.conf, at both servers is functional level 2016, check 

database, but at both servers I got 0 errors. I checked history and I 
checked 

functional level after raising level, so it must be OK at that time. 




When I check functional level at backup server I get correct answer: 




Domain and forest function level for domain 'DC=mydomain,DC=com' 

Forest function level: (Windows) 2016 

Domain function level: (Windows) 2016 

Lowest function level of a DC: (Windows) 2016 




AD Schema is version 88 




Unfortunately I (google) did not find any usable solution of this problem. 

Can somebody give me an advice how to correct this problem without 

reprovisioning? If I understand well, reprovision is new start and I need 
made 

all settings from the scratch. 




Thank you very much for your help. 




-- 

Greetings, ladas 
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