ERROR – THE ACTIVE DIRECTORY SCHEMA IS NOT UP-TO-DATE & LDIFDE.EXE IS NOT INSTALLED ON THIS COMPUTER

If you are trying to install Exchange Server on Member Server (Other than Domain Controller) then You would get the following error.

"Error: The Active Directory Schema is not up-to-date and Ldifde.exe is not installed on this computer. You must install Ldifde.exe by running Add-WindowsFeature “RSAT –ADDS”.

These errors occur because Exchange setup is attempting to use the LDIFDE.exe tool to update the Active Directory schema for Exchange Server, and the tool is not installed by default on these operating systems.

The solution is to install the RSAT-ADDS components on the server.

To Resolve this Error run the following commands in Power Shell.

Import-Module Servermanager

Add-WindowsFeature "rsat-adds"

and 

Restart the Server.