This is the standard way to enable management tools for specific roles like Active Directory, DNS, or DHCP. Open from the Start menu.
Do not download a file. Go to Settings > Apps > Optional Features > Add a feature and search for "RSAT". download rsat for windows server 2016
Select the specific tools you need (e.g., > AD DS and AD LDS Tools ). This is the standard way to enable management
Since the tools are built-in, use one of the following methods to activate them: Method 1: Using Server Manager (GUI) Go to Settings > Apps > Optional Features
Click through the prompts until you reach the Features section.
If you are looking to manage Windows Server 2016 from a (version 1803 or earlier), you may still need to download the standalone RSAT for Windows 10 package from the official Microsoft Download Center. How to Install RSAT on Windows Server 2016