Fetch IIS Application Pool identities and Virtual Directories (and passwords!) to check that passwords used are correct and won't lock you out of the system due to high failure count

Get-IISAppPoolIdentities.ps1

Import-Module WebAdministration;Get-ChildItem -Path IIS:\AppPools\ |
Select-Object name, state, managedRuntimeVersion, managedPipelineMode, @{e={$_.processModel.username};l="username"}, 
  @{e={$_.processModel.password};l="password"}, @{e={$_.processModel.identityType};l="identityType"} |
format-table -AutoSize

# Also, to get virtual directories and auth credentials:
# (Need to select a new object to alias Path to AppPath, since VirtualDirectory also has a Path property)
#
get-iissite | sel -expand Applications | sel @{e={$_.Path};l="AppPath"} -expand VirtualDirectories |
        sel AppPath, LogonMethod, UserName, Password | ft -auto -wrap