SharePoint 2013 Workflow Error on “Start a Task Process” action for assigning Task to a User


While creating a SharePoint 2013 Workflow in SharePoint Designer 2013, for a simple task approval, I found the following 404 error on workflow execution:




After doing some research and reading this error closely, which shows a bit about “ExpandGroupsToPrincipals” in error message, I made following change in to the task Form of this workflow:

I unchecked “Assign a task to each member within groups” because this task was assigned to a single User not any Group. The error suggested that SharePoint was trying to expand this resource, which is a User, not a Group and throwing this Exception

Published this workflow after this change and all worked as expected.


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