Exchange 2016 Install - Active Directory Server is not available


I have been tasked with installing Exchange 2016 on a VM server running Windows Server 2016.

We have another VM server where we have our internal domain setup, and the VM where exchange is to be installed in is listed under Active Directory Users and Computers - > -> Computers.

When I run the PowerShell command to Prepare Schema, the first of many errors I get is 'Active Directory server is not available'.

What steps do I need to take in order to make the Active Directory server available for the Exchange VM?  

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Jose Gabriel Ortega CastroCEOCommented:
Enable IPV6 on both AD and exchange server.

Also, make sure that AD DNS1 is, and forward to any external DNS ( like Google, using the Forwarders tab in the DNS GUI) and in Exchange server, the DNS should be the internal DNS of your AD (ex:
I don't know who teaches people that put everywhere.

ajthomas12Author Commented:

How do I enable IPV6 on  a server?

How do I check if it is enabled or not?

I did an ipconfig on both servers (is this correct).  The AD server does not appear to have IPV6 enabled.  The EX server does appear to have IPV6 enabled because ipconfig returned an address for it.

Jose Gabriel Ortega CastroCEOCommented:
AJ please go to "Open and Internet Settings", then follow the red circles
sorry for the delayed answer

It's enabled if you see the IPv6 checked, and you need to do it in both (AD and Exchange server).

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