How to create task with group managed service account (gMSA) account?

[the-mike-anderson]

Hi all,

I've just started converting to a .NET 8.0 MVC web application from a .NET 4.8 console application using the TaskScheduler COM library. Using that library, I am able to create scheduled tasks with a gMSA account by setting the password to null. Using this library, I am unable to create the task with a gMSA account. I get the following error:

The task has been configured with an unsupported combination of account settings and run time options. (0x80041314)

I am setting the forceV1 parameter to true in this line of code:

SchedTask.TaskService ts = new SchedTask.TaskService(options?.ServerWithBackslashes, (string)null, (string)null, (string)null, true);

I am unable to connect to Windows 2019 server otherwise. The failure occurs on RegisterTaskDefinition call below:

using SchedTask = Microsoft.Win32.TaskScheduler;

...

ts.RootFolder.RegisterTaskDefinition(
					taskname,
					td,
					SchedTask.TaskCreation.CreateOrUpdate,
					UserName,         // is of the pattern domain\gmsa_account$
					UserPassword,     // i've tried null and empty string
					logonType,        // set to Microsoft.Win32.TaskScheduler.TaskLogonType.Password
					null
					);

I'd like to add that when I use a normal account name and password, the scheduled task is created just fine.

[dahall]

Do not set forceV1 = true; that pushes it back to WinXP settings. Let me know if that fixes things.

[the-mike-anderson]

Thank you for checking in David. I had it set to forceV1 as a hail Mary approach to getting it to work. I have had no success with it set or not set. Also, I should have gotten back here and closed out the question. I've already moved on with another solution where I build a dynamic PowerShell script that gets remotely executed against the target machine.