win server 2016 Active Directory Report an error

Question

Environment: There is a domain control, for the time being DC1, the server2016 ip address has been configured, the domain has been added, and the Remote Procedure Call (RPC) and Remote Procedure Call (RPC) locater services have been turned on. Now you must synchronize the dns in DC1, But server2016 reported an error when upgrading the domain controller.
Error message:
01 is the first step to report an error when deploying the configuration, the RPC service is unavailable, but the Remote Procedure Call (RPC) and Remote Procedure Call (RPC) locater services are already enabled, sometimes the error will be skipped when the service is restarted, and then There is a second error,
02 is an error in the next operation, the network path cannot be found (dns configuration is no problem, the network can ping the ad domain, which is DC1)
03 is the first step in the deployment configuration, when the rpc does not report an error, it directly prompts that the network path cannot be found.
Please let me see what's going on, thank you

Answer 1

Hello,

Thank you so much for posting here.

According to your description, there is error when we trying to promote the Windows server 2016 DC.

We can troubleshoot as below:

Firstly

As mentioned, the error is “RPC server is unavailable”. We could refer to the following article to troubleshoot.
https://social.technet.microsoft.com/wiki/contents/articles/4494.windows-server-troubleshooting-the-rpc-server-is-unavailable.aspx#

Secondly

Check if all the ports AD required are open.

Active Directory and Active Directory Domain Services Port Requirements
https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/dd772723(v=ws.10)?redirectedfrom=MSDN
 
Active Directory Replication over Firewalls
https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-2000-server/bb727063(v=technet.10)?redirectedfrom=MSDN

Finally

Before promoting the Windows server 2016 DC, we could follow the steps below.
 
1, Check DC health by running Dcdiag /v and check AD replication by running repadmin/showrepl and repadmin /replsum before joining the new DC.
2, Logon this new server using local Administrator account, and set the Preferred DNS server, we need to set the IP address of  DNS server as the Preferred DNS server of this new server.

For example:
My PDC is also a DNS server, and the IP address of my PDC is 192.168.2.67.
And I want to add one new server to the domain of the PDC, I will set the Preferred DNS server of the new server as below:

3, Join the new server to existing domain.
Open Control Panel\All Control Panel Items\System and click change settings\Computer Name tab\ click change.

After we add the server to the domain and now we can promote it as DC.
1, Add DNS role and ADDS role and promote the new server as Domain Controller.
2, Repeat step1 to check AD environment health.

For any question, please feel free to contact us.

Best regards,
Hannah Xiong

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