Removing phantom application folders from website configuration in IIS

Thank you Ronald as I needed exactly this today. Here is how to remove phantom application folders from websites in IIS using PowerShell.

Today I wanted to remove application folders from the website configuration in IIS whose physical path on the filesystem was removed. E.g when the application folder "/test1" in the website example.com should point to z:\sites\example.com\www\test1 but was removed.

foreach( $server in (Get-ADComputer -Filter {(enabled -eq $True)} -SearchBase "OU=Webservers,$((Get-ADDomain).ComputersContainer)").DNSHostname) {
  Invoke-Command -ComputerName $server -ScriptBlock {
    Import-Module WebAdministration
    Write-Host $Using:server;
    Get-ChildItem IIS:\Sites | foreach {
      $site = $_;
      # Get all applications without existing physical path
      $applications = Get-ChildItem $site.PsPath | Where-Object { $_.NodeType -eq "application" -and (Test-Path $_.PhysicalPath) -eq $False };
      # List all phantom applications
      $applications | FT
      # Remove applications
      $applications | Remove-WebApplication -Site $site.Name
    }
  }
}

Source: https://serverfault.com/a/890561/161572.

Remember to Import-Module WebAdministration on Windows Server 2012 R2 and up instead of Add-PSSnapin WebAdministration. Get more Get-ADComputer examples from here.

This post showed you an easy way to remove orphaned IIS web applications for IIS administrators.