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I'm running samba 4.3.11 on Ubuntu server Xenial. It's the only AD-DC in a windows domain that used to be hosted by a single Win2k3 server.

The AD schema version is 30, the functionality level is already raised to 2008_R2 (domain) and 2008 (forest).

ldbsearch -H /var/lib/samba/private/sam.ldb -b 'cn=Schema,cn=Configuration,dc=domain,dc=com' -s base objectVersion
# record 1
dn: CN=Schema,CN=Configuration,DC=vswest,DC=intern
objectVersion: 30

How can I raise the schema version? I could not find anything on the web.

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I found that by search by myself:

https://wiki.samba.org/index.php/AD_Schema_Version_Support

To upgrade the schema version on a running Samba installation to 2012_R2, use this command:

samba-tool domain schemaupgrade

Note: This tool only works from 2008 R2. In order to upgrade from earlier versions, the ldf files must be manually sourced from the Windows adprep tool and run with the --ldf-file= option.

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