The Samba-Bugzilla – Bug 12400
Windows 2012R2 + 2016 fail to join Samba as a DC
Last modified: 2016-10-31 05:38:50 UTC
With the standard DC promotion tool, we fail to pass the initial pre-requisites check which prevents Windows from even attempting the join. This check appears to use WMI over DCOM (which Samba does not support) in order to test for the Exchange schema.