Finding Deleted IIS Application Directories

If you develop web applications for IIS, or administrate IIS and file systems, you sooner or later end up with orphaned IIS application which point to non-existing directories.

To get an overview of IIS applications, start up PowerShell in administrator mode (I prefer PowerShell ISE) and run

import-module webadministration
dir "IIS:\\sites\Default Web Site"

To exclude any files that reside in IIS root, filter out the “file” entries:

import-module webadministration
dir "IIS:\\sites\Default Web Site" | where { $_.NodeType.Trim() -ne "file" }

Finally, we test the Physical Path property of the resulting entries

import-module webadministration
dir "IIS:\\sites\Default Web Site" 
    | where { $_.NodeType.Trim() -ne "file" 
        -and ![System.IO.Directory]::Exists( $_.PhysicalPath ) }

This command lists all IIS web application and virtual root directories which point to non-existing directories. The result looks like this:

Type        Name         Physical Path 
----        ----         ------------- 
application application1 D:\app\app1
application web2         D:\app\web2
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