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It is just a warning. If you made the 2016 DC a GC, you are good to go
</div>


It is just a warning. If you made the 2016 DC a GC, you are good to go

<div>
ok but is there a diagnostic I can run to make sure clients are seeing the new GC ?
</div>


ok but is there a diagnostic I can run to make sure clients are seeing the new GC ?

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<div class="content wysiwyg-content">
Currently migrating our setup form SBS2011 to &quot;full&quot; 2016 domain.<br />
<br />

<ul>
<li>Have installed Server 2016 on the new server &amp;&nbsp;joined to the domain</li>
<li>Promoted it to a domain controller, make it a global catalog server and a DNS Server</li>
<li>Replication seems ok</li>
<li>Transferred the FSMO roles</li>
</ul>
<br />
However when trying to demote de SBS I get this <br />
<br />
<a href="https://filedb.experts-exchange.com/incoming/2017/01_w03/1139650/Screenshot-2017-01-20-10.00.02.jpg" target="_blank" title="DC demotion (33 KB)"><img alt="DC demotion" class="file-block lazyload" style="max-width: 435px;" data-src="https://filedb.experts-exchange.com/incoming/2017/01_w03/1139650/Screenshot-2017-01-20-10.00.02.jpg" /></a><br />
Is there a way to make sure the 2016 will take over as global catalog server ? Anything I might be missing ?
</div>
</div>


Screenshot-2017-01-20-10.00.02.jpg

Currently migrating our setup form SBS2011 to "full" 2016 domain.

Have installed Server 2016 on the new server & joined to the domain
Promoted it to a domain controller, make it a global catalog server and a DNS Server
Replication seems ok
Transferred the FSMO roles


However when trying to demote de SBS I get this 



Is there a way to make sure the 2016 will take over as global catalog server ? Anything I might be missing ?

Migrating from SBS2011

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