You cannot start the Active Directory Users and Computers tool because the server is not operational - Windows server 2012 R2

Hello there,

When you install the Windows Server Active Directory Domain Services role, Windows also installs a command-line tool named dcdiag. This utility is very helpful to troubleshoot Active Directory.

Repadmin.exe and Dcdiag.exe are available on all domain controllers that run Windows Server 2012 R2 or later versions. For more information about how to use these tools to troubleshoot problems, see the following articles.

AD DS Troubleshooting https://learn.microsoft.com/en-us/windows-server/identity/ad-ds/manage/ad-ds-troubleshooting

Domain controller configuration error (The server is not operational) when you configure a server by using Server Manager https://learn.microsoft.com/en-us/troubleshoot/windows-server/identity/fail-to-configure-server-using-server-manager

Please try the troubleshooting steps from the above article and see if that helps.

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Hi,

Can you please provide an output for dcdiag /c /v and update here. Do you have any portscanner or other AV using up all the RPC ports, quick way to check is nbtstat -an.

It is for Windows 2012R2

Hi,

Check this troubleshooting steps over here - cannot-start-active-directory-users-and-computers-tool

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