Take preservation/retention policy into account
When retention policy is activated on O365, it's not possible to delete Nintex workflows. It's also not possible to uninstall the O365 Workflow and Forms app from a site.
The only solution is to deactivate retention policy
37
votes

Thank you very much for posting your feedback for our review. At this time, we will not be adding this request, as we are focused on adding other highly requested capabilities in Nintex Workflow Cloud. As our next generation workflow orchestration platform, we recommend customers to move to NWC. Learn more about NWC and the migration tool here.