Update Application Pool Password using PowerShell Script

By using below script we can update Passwod of Specific User for all his assigned Application Pool

PowerShell Script:

Import-Module WebAdministration
$applicationPools = Get-ChildItem IIS:\AppPools | where { $_.processModel.userName -eq "SPServer\administrator" }
 
foreach($pool in $applicationPools)
{
    $pool.processModel.userName = "SPServer\administrator"
    $pool.processModel.password = "sp#123@admin"
    $pool.processModel.identityType = 3
    $pool | Set-Item
}
 
Write-Host "Password Sucessfully Updated." -ForegroundColor Magenta 
Write-Host ""