I’ve had a few comments through the blog on setting up a workflow proxy account in Project Server 2013, so I thought I would post something to take you through how to configure this. The Workflow Proxy in Project Server 2013 is important if you intend to use the classic workflow engine (not Workflow Manager ) and will be the account that makes the PSI calls associated with the workflow. The account should be set up as part of your Project Server installation and is specified in the Plan for administrative and service accounts in Project Server 2013 documentation.