The tool was unable to install SharePoint 2013 on Windows 2012 R2

Problem Statement:

When I run Prerequisite Installer for SharePoint 2013 on Server 2012 R2, it gives following error: "The tool was unable to install Application Server Role, Web Server (IIS) Role"

Reason:
Actually, Prerequisites installer on SharePoint 2013 tries to execute the executable C:\Windows\System32\ServerManagerCMD.exe but Windows 2012 R2 comes with C:\Windows\System32\ServerManager.exe. 


Resolution:

You just need to make a copy of ServerManager.exe and rename the copy to ServerManagerCMD.exe and execute Prerequisites Installer. 

That's it folks :)

..::Keep on SharePointing::..