How to specify application pool identity user and password from PowerShell

Question

I have been having lots of difficulty automating the setup of a Web application and configuring IIS appropriately with the Application Pool Identity. I am doing this in a Web a

Answer 1

After few experiments

Here is my Answer, I hope this will helps , I've worked on IIS 8.5

$credentials = (Get-Credential -Message "Please enter the Login credentials including Domain Name").GetNetworkCredential()

$userName = $credentials.Domain + '\' + $credentials.UserName

Set-ItemProperty IIS:\AppPools\$app_pool_name -name processModel.identityType -Value SpecificUser 

Set-ItemProperty IIS:\AppPools\$app_pool_name -name processModel.userName -Value $username

Set-ItemProperty IIS:\AppPools\$app_pool_name -name processModel.password -Value $credentials.Password

Answer 2

I'm on powershell v4 which doesn't have 'ConvertFrom-SecureString', in the end I got the following to work for me:

Import-Module WebAdministration

$cred = Get-Credential -Message "Please enter username and new password to reset IIS app pool password (for app pools running as username)"

$bstr = [System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($cred.Password)
$plaintext = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($bstr)

$applicationPools = Get-ChildItem IIS:\AppPools | where { $_.processModel.userName -eq 
$cred.UserName }

foreach($pool in $applicationPools)
{
    $apppool = "IIS:\AppPools\" + $pool.Name

    Set-ItemProperty $apppool -name processModel.password -Value $plaintext
}

Write-Host "Application pool passwords updated..." -ForegroundColor Magenta 
Write-Host "" 
Read-Host -Prompt "Press Enter to exit"

Answer 3

You would do this as follows:

Import-Module WebAdministration
Set-ItemProperty IIS:\AppPools\app-pool-name -name processModel -value @{userName="user_name";password="password";identitytype=3}

See this document here for an explanation, and a reference of the indentity type numeric for the user type you will run the app pool under: http://www.iis.net/configreference/system.applicationhost/applicationpools/add/processmodel

Answer 4

seems you can do this a little more directly now

appcmd set apppool junkapp /processmodel.password:junkpassword