Powershell script to change service account

Question

Does anyone have a Powershell script to change the credentials used by a Windows service?

Answer 1

Considering that whithin this class:

$class=[WMICLASS]'\\.\root\Microsoft\SqlServer\ComputerManagement:SqlService'

there's a method named setserviceaccount(), may be this script will do what you want:

# Copyright Buck Woody, 2007
# All scripts provided AS-IS. No functionality is guaranteed in any way.
# Change Service Account name and password using PowerShell and WMI
$class = Get-WmiObject -computername "SQLVM03-QF59YPW" -namespace
root\Microsoft\SqlServer\ComputerManagement -class SqlService

#This remmed out part shows the services - I'll just go after number 6 (SQL
#Server Agent in my case):
# foreach ($classname in $class) {write-host $classname.DisplayName}
# $class[6].DisplayName
stop-service -displayName $class[6].DisplayName

# Note: I recommend you make these parameters, so that you don't store
# passwords. At your own risk here!
$class[6].SetServiceAccount("account", "password")
start-service -displayName $class[6].DisplayName