Automatic synchronization with Active Directory with a business subscription does not work.
OPNsense 23.10_2-amd64
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Note
The Automatic user creation option replaces manual imports in cases where account details can be retrieved from the remote LDAP server. Users created with this option should be removed manually from the firewall when they are removed from (one of) the LDAP server(s), which is the same as they would be maintained locally on manual imports.
As of version business edition 21.10, the system will automatically query the LDAP servers and remove non-existing users. (not available in the community version of OPNsense)
We have not received any response from the developer to our question. We consider the purchase of a subscription to be wasted money. We won't take any more.
It might not be pointed out to you but this forum is a community forum. The post might have gone unintentially unnoticed by devs. With your subsciption, you should IMHO submit a ticket to ensure it gets to the relevant party in the company.
I wrote to the address indicated in the contacts, no one answers us.
In my experience the best way to get an answer due to a bug is to open an issue on github with what's not working:
https://github.com/opnsense/core/issues