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Workflow failed due to assignee not available

  • April 23, 2026
  • 2 replies
  • 25 views

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Hi everyone,

 

We have a workflow that goes through a lot of approvals, and it takes quite a while to complete as it is complex. One of the members has left the organisation; hence, the workflow is failing, as the system is linked with Azure Active Directory. I have replaced that approver with another, but the existing workflows are still failing. 

I have looked at the delegation settings, but we can only choose “delegate to”; the “from” field is based on the logged-in user.

Is there a way we can fix this?

Thank you :)

2 replies

Simon Muntz
Nintex Partner
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  • Nintex Partner
  • April 23, 2026

Hi Natha,

Make sure Auto Task Delegation is enabled under the Tenant Settings.
Then, use the Nintex API to set Task delegation for the user who has left.
https://developer.nintex.com/docs/nw-api-docs/ref/tasks-v2/operations/create-a-task-autodelegation

If you do not know the usersID to use in the api call, use the get users in tenant API and filter by the user’s email address.
https://developer.nintex.com/docs/nw-api-docs/ref/usermanagement-v1/operations/list-users


The workflows may still fail if the user’s account is deactivated, as they still won’t be found, but it may be worth a shot.


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  • Author
  • Rookie
  • April 27, 2026

Thank you ​@Simon Muntz for your reply. I will have a look your solution. Much appreciated :)