SYMPTOMS
When running the PST Enterprise pre-installer, the automated installation of the required IIS roles fails. The PSTEnterprise_PreInstall.log shows the following:
Updating IIS feature
All Features are not installed
Deployment Image Servicing and Management tool
Version: 6.3.9600.17031
Image Version: 6.3.9600.17031
Enabling feature(s)
Error: 0x800f0906
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.
The DISM log file can be found at C:\Windows\Logs\DISM\dism.log
Deployment Image Servicing and Management tool
Version: 6.3.9600.17031
Image Version: 6.3.9600.17031
Enabling feature(s)
Error: 0x800f0906
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.
The DISM log file can be found at C:\Windows\Logs\DISM\dism.log
Updating IIS feature failed
ROOT CAUSE
The install files for the Windows Features required are not in the local cache on the server.
RESOLUTION
You should install the required IIS features manually from Server Manager or Power Shell, specifying the Windows Server source image so that the necessary files can be accessed.