Task scheduler the operator or administrator has refused the request.

Question

Problem :

I am learning about Task Scheduler. I am trying to schedule a C# console application in the Task Scheduler of my Windows 2012 R2. The application is expected to run when executed it manually or by doing the Right click on the scheduled task and then clicking on Run but unfortunately it failed when it was triggered by the Task Scheduler with following error.

“Task scheduler the operator or administrator has refused the request.”

I had already done a lot of research on it and had executed below steps.

I had already selected the required option for "Run whether user logged in or not".

Also I had already Unchecked the option for "Start the task only if the computer is on AC power".

Answer 1

I had also faced the same error in the past. That’s why I am trying to help you.

My mistake was that the previous instance of my task was still running and as there was the option as "Do not start a new instance" selected by default under the "If the task is already running, then the following rule applies" on a Settings tab of my task so my Task Scheduler refused to start the new instance.

You should also check your History tab of your task. I found there was the event called "Launch request ignored, instance already running". I hope it will help you.