When running TFS BPA from 2013 Powertools against a TFS 2013 install I'm seeing the following error:
"Team Foundation Server application pool ManagedPipeLineMode must be set to Classical. Team Foundation Server web services will not be operational if the ManagedPipelineMode is not set to Classical."
If the ManagedPipelineMode is changed to Classical, then TFS stops working. Did something change from 2012?