The operator or administrator has refused the request task scheduler

Question

I have scheduled a C# console application in Task Scheduler of Windows 2012 R2. Application will run when executed it manually or Right click on scheduled task and click on Run, but it is failed when triggered by Task Scheduler with below error.

The operator or administrator has refused the request(0x800710E0)

I have followed below steps also after Google search

1. Selected "Run whether user logged in or not"
2. Unchecked "Start the task only if the computer is on AC power"

Answer 1

In my case, the error message "The operator or administrator has refused the request" meant that a previous instance of the task has still been running and the task was configured to not start a new instance if it's already running (the default configuration), so the Task Scheduler refused to start a new instance when the task was triggered.

You can find that option in a select box on the task's Settings tab, under the caption "If the task is already running, then the following rule applies". The default value is "Do not start a new instance".

But that error message is pretty confusing. From the other answers, you may see that it may mean many completely distinct errors. As is usual in Microsoft's products.

Tip

It's helpful to check the History tab of a task. That's where I have found out what's actually going on. There was an event "Launch request ignored, instance already running".

Answer 2

In my case, I had to redo the permissions on the task. Somehow it had lost the domain portion of the username. Instead of `DOMAIN\joeuser' it was just 'joeuser'. After a reset, it worked correctly as it had for the previous year.