When publishing a workflow that has a task action configured, in Nintex Workflow for Office 365, the workflow fails to publish and the following error occurs:
Error publishing workflow. A duplicate content type "Nintex Task Outcome Content Type" was found. If the problem persists, contact Nintex support, and quote: Correlation ID: Tenant ID: Time (UTC):
Note: This may require deleting workflow tasks from the Workflow Task list, these can be restored after the bad content types have been removed.