Article ID: 2496152 - View products that this article applies to.
This Knowledge Base article only applies to out-of-box (OOB) workflows.
When a workflow is started, it is then automatically canceled by the system account in Microsoft SharePoint 2010.
Figure 1 shows the workflows that were started but were automatically canceled as you can see in the Status column. Figure 2 shows the history entry for one of the canceled workflows. Notice that the Event Type indicates an Error and the Outcome indicates Access Denied.
The cause is currently unknown. The Microsoft Online Services Support Team is in the process of engaging CSS to determine the root cause and find a permanent fix.