Symptoms
Whenever I try to open the ViewFlow for a workflow, I receive the following error/
HTTP Error 500.24
An ASP.NET setting has been detected that does not apply in Integrated Managed pipeline mode.
Diagnoses
The issue is related to the Authentication setting for the ViewFLow site in IIS. Generally this error means ASP.NET impersonation is enabled/set to true.
Resolution
Disabling ASP.NET Authentication in IIS by navigating to the ViewFLow site and clicking Authentication resolved the issue.