Powershell script does not run via Scheduled Tasks

Question

I have a small script on my Domain Controller that is setup to email me via SMTP about the latest Security Event 4740.

The script, when executed manually, will run a

Answer 1

In addition to advices from above I was getting error and found solution on following link http://blog.vanmeeuwen-online.nl/2012/12/error-value-2147942523-on-scheduled.html.

Also this can help:

In task scheduler, click on the scheduled job properties, then settings.

In the last listed option: "if the task is already running, the following rule applies:" Select "stop the existing instance" from the drop down list.