“The RPC server is unavailable” while logging to Domain controller OR joining client machine to Domain Controller
There are many reasons to see this error,
I will discuss the issues that mostly make this happen

1] RPC service might be disabled.
Start the service through “services.msc”

2] RPC Dependencies services might be stopped

Start Dependencies services for RPC
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Steps to Configure Windows DNS Server/Service.

Here is a very simple way to configure a DNS service on Windows Dedicated Server that hosts your website.

Requirements:

1. You should have one of the following Windows OS to install the DNS service:

– Windows XP Professional edition.
– Windows Vista.
– Windows 2003 Server Data center edition.
– Windows 2003 Server Enterprise edition.
– Windows 2003 Server Standard edition.

You cannot install DNS service on Windows 2008 Server with the steps below as it does not have an option to add remove Windows Components. You will have to use the Server Manager option to install Services on your Windows 2008 Server.

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