We will describe the instructions on how to create a new SharePoint
Designer workflow that terminates all faulting workflows in the current
list, but first, let’s address some important points:
1. What does “Terminate this workflow now” link do?
2.
How can you retrieve the collection of the workflow objects that
represent the item's workflows?
3. How to execute a code from
SharePoint Designer?
Please read the complete post at SharePoint Blog of VirtoSoftware - vendor of web parts for SharePoint