Have 35 Interfaces are running under service account.
How Can I change password by script?
You can use Powershell and do the changes remotely. You can develop your own custom script and do the changes or deploy the script.
Powershell : Set-Service
Additional Reference : https://social.technet.microsoft.com/wiki/contents/articles/37501.powershell-script-to-replace-credentials-to-windows-se…
Using cmd prompt:
sc.exe config "Your PI Interface Service" obj= "DOMAIN\User" password= "new password"
Retrieving data ...