[Samba] Cant Replicate Schema Updated With Adprep

[Danny Tipple]

I have a very old domain i inherited that is running samba 4.5.6 but is on schema version 30.

I added a windows 2003 DC and used the 2008r2 adprep.exe utility to upgrade the schema to version 47.  To do so the 2003 server had to take the schema and infrastructure roles.

I am now trying to use the repadmin utility to sync the schema back to samba to it is failing with the following:

[2017/06/09 16:34:11.855939,  0] ../source4/dsdb/repl/replicated_objects.c:245(dsdb_repl_resolve_working_schema)
  Can't continue Schema load: didn't manage to convert any objects: all 131 remaining of 133 objects failed to convert
[2017/06/09 16:34:11.856945,  0] ../source4/dsdb/repl/replicated_objects.c:358(dsdb_repl_make_working_schema)
  ../source4/dsdb/repl/replicated_objects.c:358: dsdb_repl_resolve_working_schema() failed: WERR_INTERNAL_ERRORFailed to create working schema: WERR_INTERNAL_ERROR

Is what I’m trying to achieve possible?

Thanks
Danny