I am running the nightly version of Halfmoon (26.04) of Truenas and having Multiprotocol shares which are shared with both SMB and NFS. We are seeing files created by users with a long user id which maps to Windows AD users. So, I tried to configure the IDMAP domain and specify a range of IDs to us…

Current docs for the IDMAP section of the Directory Services form are here: Configuring Active Directory | TrueNAS Documentation Hub and Active Directory Screens | TrueNAS Documentation Hub

Thank you for the current documentation link. I went through it and find that I have followed what the documentation says about configuring Truenas for AD use. I have a doubt on how we set the Range Low and Range High for IDMAP configuration when not using the default. I tried using IDMAP backend …

You have to fully populate the relevant attributes in AD. if you’re missing gid assignments for instance for domain users, it will obviously break idmapping. Seeing wbinfo -u or wbinfo -g output simply means that winbindd can enumerate users / groups in your domain. It doesn’t mean that it can do a…

Hi, thanks for the reply I have enabled the Advanced Attribute editing and added the uidNumber and gidNumber attributes for the AD user to match what is expected in Unix/NFS. I can do this for all the users, but it has been done for some users which can be tested at first to see if they work. How…

Hi, The only way rfc2307 could at this point to be implemented is to use RID schema in TrueNAS with id’s copied to Samba Users Unix attributes via ‘Active Dirrectory users and computers’ RSAT tool. Tried AD with rfc2307, plain rfc2307 and LDAP without success. In many cases there are service and …

I don’t see this issue. Have successfully used powershell / AD users and computers to populate relevant attributes. The key thing to remember is that you must provide full attribute details for all groups user is member of (including its primary group) as well as populating all relevant user details…

That the user details according to samba are uidNumber gidNumber default shell and home directory that the Group has gidNumber per Samba Wiki. They are filled no user in list and re-run of ActiveDirecory setting met with empty value on Schema mode.

Can you let me know which attributes you populated for the user in AD and how it was visible in the command line of the truenas server? I could try this at my end too and see if it helps. I am assuming you have the truenas directory services configured to use the AD/SFU attributes from Active dire…

I have TrueNAS connected to Samba Version 4.19.5-Ubuntu acting AD domain controller and TrueNAS now in RID mode. Tried the AD mode with schema RFC2307 without success. The ‘Unix Primary Group’ and ‘Unix NSS Info’ tick marks do not change or interact with ‘/etc/smb4.conf’ and I presume the Schema sel…

AD IDMAP backend does not fetch domain users

TrueNAS General

Atol February 14, 2026, 11:22pm 11

Check AD setting Unix Primary group and Unix NSS info - TrueNAS General - TrueNAS Community Forums first. If this is not working I doubt it is possible to get anything working with AD backend.

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AD IDMAP backend does not fetch domain users

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