Sharepoint 2013 prerequisites

Question

I am trying to install roles and feature using the script Install-SP2013RolesFeatures.ps1    at  
https://gallery.technet.microsoft.com/office/DownloadInstall-SharePoint-e6df9eb8
But I get below error. 
I tried switching off IE enhanced security, I tried offiline installation with SP media mounted but I get the same error. I also reduced the security level in the internet options. Any suggestions please. 
Add-WindowsFeature : The request to add or remove features on the specified server failed.
Installation of one or more roles, role services, or features failed.
The source files could not be downloaded.
Use the "source" option to specify the location of the files that are required to restore the feature. For more
information on specifying a source location, see http://go.microsoft.com/fwlink/?LinkId=243077. Error: 0x800f0906
At line:1 char:1
+ Add-WindowsFeature Net-Framework-Features,Web-Server,Web-WebServer,Web-Common-Ht ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (@{Vhd=; Credent...Name=localhost}:PSObject) [Install-WindowsFeature],
    Exception
    + FullyQualifiedErrorId : DISMAPI_Error__Cbs_Download_Failure,Microsoft.Windows.ServerManager.Commands.AddWindowsF
   eatureCommand
@R

Answer 1

You may need to provide access to the sources, that is if you mount or look at the DVD Server 2012 or 2012 R2 comes on, the path DriveLetter:\Sources\Sxs (or the WIM). You may need to modify the cmdlet within the script:
https://technet.microsoft.com/en-us/library/jj205467.aspx
Note Add-WindowsFeature is an alias for Install-WindowsFeature as of Server 2012 R2.
Trevor Seward
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