Please note that all installations must be run as an administrator with elevated privileges.
Start the Server Manager tool and choose to ‘Add Roles and Features’.
From the select Server Roles menu choose the ‘Web Server (IIS)’ role.
On the Select Features screen click next.
For the role services screen choose to add the following role services. On Windows Server 2012 R2 select the corresponding 4.5 options.
Important: Restart the server.
Internet Information Services (IIS) installation completed. Continue to Identity Provider (IDP).