>You have to specify a password for any user account you run under. But when you use a system account (ie. SYSTEM, NETWORK SERVICE etc.) you don't specify a password.
>
>It may also be that if you use your own/current account that task scheduler can get the SID Security token directly without having to prompt for the password and look up the account first.

I mean, if you do this:

Go in Task Scheduler
Go in a task
Select the account the task should run with
Save

Only the selection of the account is needed. I was not able to find a place where it asks for a password.

In IIS, it does however. When we select the account, it prompts for the password.