If you are installing a Citrix XenDesktop Desktop Delivery Controller and receive an error while trying to install, check to verify that you have the ability to install IIS on the server.
Even if you have used the –nosites parameter with Setup.exe to prevent the installation of Web Interface components, the installer still tries to install IIS but will omit the Web Interface installation and configuration. Once complete, you can pare the installation back down by uninstalling the IIS services but for the proper execution of the installation, you will need rights to install IIS.
An easy way to verify if you have access is to go to ADD/Remove and try to install the IIS components. Group Policies on the machine like above can also stop the proper installation of the Desktop Delivery Controller.
SEO error: Internet Information Services (IIS) cannot be installed because your administrator has enabled a "Prevent IIS installation" group policy. You will not be able to install components that depend on IIS.