Start PowerShell Script remotely with Nintex Workflow

Hi @Nintex_Admin_xyz 

there is an extension here but it is a couple years out of date and I cannot guarantee it will work: 

Alternatively I would recommend looking into building an event receiver that looks at a given Sharepoint list, when an item is created in the list it can execute a Powershell script, that way Nintex would only need to populate the list with the users you want to create and the Powershell script will react to it, I would recommend having the Powershell script remove the records from the list on completion to ensure no unwanted build-up. 

this is the article for visual studio:
https://learn.microsoft.com/en-us/visualstudio/sharepoint/how-to-create-an-event-receiver?view=vs-2022&tabs=csharp

TL:DR-

1. Open Visual Studio.
2. Create a new SharePoint 2019 - Empty Project.
3. Right-click on the project in Solution Explorer > Add > New Item.
4. Choose "Event Receiver" and name it.
5. Choose the type of event you want (in your case, an item added event for a list).

It should generate an ItemAdded method in the receiver and you can add logic like this to execute a script:

System.Diagnostics.Process.Start("powershell.exe", @"& 'C:\path\to\your\script.ps1'");

Then to attach your event receiver to a specific list you need to edit the Elements.xml like below, the list ID template of 100 will be attached.:

<Elements xmlns="http://schemas.microsoft.com/sharepoint/">
  <Receivers ListTemplateId="100">
    <Receiver>
      <Name>MyEventReceiverItemAdded</Name>
      <Type>ItemAdded</Type>
      <Assembly>$SharePoint.Project.AssemblyFullName$</Assembly>
      <Class>YourNamespace.YourEventReceiverClassName</Class>
      <SequenceNumber>10000</SequenceNumber>
    </Receiver>
  </Receivers>
</Elements>

Another way which I prefer would be to use Powershell to attach it which can happen after you deploy it by right clicking on the project in VS and deploying.

Add-PSSnapin Microsoft.SharePoint.PowerShell

$web = Get-SPWeb "http://your_sharepoint_site_url"
$list = $web.Lists["Your List Name"]

$eventReceiver = $list.EventReceivers.Add()
$eventReceiver.Assembly = "YourAssemblyName, Version=1.0.0.0, Culture=neutral, PublicKeyToken=your_public_key_token"
$eventReceiver.Class = "YourNamespace.YourEventReceiverClassName"
$eventReceiver.Type = [Microsoft.SharePoint.SPEventReceiverType]::ItemAdded
$eventReceiver.SequenceNumber = 1000
$eventReceiver.Update()

$web.Dispose()

If you don’t have VS then I think you can do this in VS code but I have never done it, most of what I am writing here is from memory/articles such as this which covers event receivers in more detail:

https://www.c-sharpcorner.com/article/introduction-of-sharepoint-event-receivers/

Jake