I have obtained the initial Checkroles.ps1 script from Checking FlexNet Manager Suite On-premises application server pre-requisite Windows features - Community (flexera.com) But in the end I modified a script from Flexera-Spider's Spider-Knownledgebase to cover the roles expected by FNMS. The Spider-script also contains a commandline switch to not only check for roles, but also to install them. I just had to remove the script signature and change the roles to the FNMS expectations. Spider Setup: System Requirements - Internet Information Services (IIS) - Community (flexera.com) (needs modification to work with FNMS) Modified Script: <# .SYNOPSIS Checks availability of needed Windows Features for IIS #> [CmdletBinding(SupportsShouldProcess = $true)] Param ( # GENERIC PARAMETERS # ------------------ [Parameter(Mandatory = $false, HelpMessage = "Try to install missing features")] [switch] $InstallMissingFeatures ) Function CheckWindowsFeature() { Param ( [Parameter(Mandatory = $true, HelpMessage = "Provide the name of the feature.")] [string] $feature) if (Get-WindowsFeature | Where-Object { ($_.Name.Trim() -eq $feature) -and ($_.Installed -eq $True) }) { Write-Host "Feature: $($feature) installed." -ForegroundColor Green } else { Write-Host "Feature: $($feature) not installed." -ForegroundColor Red if ($InstallMissingFeatures) { Add-WindowsFeature $feature } } } if (Get-Module -ListAvailable | Where-Object { $_.Name -eq "ServerManager" }) { Import-Module ServerManager -ErrorAction Stop Write-Host "Server Manager found!" -ForegroundColor Green } else { Write-Host "Error while loading ServerManager, possibly running on Client OS" -ForegroundColor Red Exit 1 } $iisInfo = Get-ItemProperty HKLM:\SOFTWARE\Microsoft\InetStp\ $version = [int]"$($iisInfo.MajorVersion)" Write-Host $version switch ($version) { 10 { CheckWindowsFeature -feature Web-Server CheckWindowsFeature -feature Web-WebServer CheckWindowsFeature -feature Web-Default-Doc CheckWindowsFeature -feature Web-Dir-Browsing CheckWindowsFeature -feature Web-Http-Errors CheckWindowsFeature -feature Web-Http-Redirect CheckWindowsFeature -feature Web-Static-Content CheckWindowsFeature -feature Web-Health CheckWindowsFeature -feature Web-Performance CheckWindowsFeature -feature Web-Http-Logging CheckWindowsFeature -feature Web-Dyn-Compression CheckWindowsFeature -feature Web-Stat-Compression CheckWindowsFeature -feature Web-Basic-Auth CheckWindowsFeature -feature Web-Security CheckWindowsFeature -feature Web-Windows-Auth CheckWindowsFeature -feature Web-Filtering CheckWindowsFeature -feature Web-App-Dev CheckWindowsFeature -feature Web-Net-Ext CheckWindowsFeature -feature Web-Net-Ext45 CheckWindowsFeature -feature Web-Asp-Net CheckWindowsFeature -feature Web-Asp-Net45 CheckWindowsFeature -feature Web-ISAPI-Ext CheckWindowsFeature -feature Web-ISAPI-Filter CheckWindowsFeature -feature Web-CGI } }   ... View more

Thanks to Adrian's help, I was able to resolve the issue: It was in fact a missing IIS-Role, and I was able to identify the missing  components using the CheckRoles.ps1 script.   ... View more