Step 6: Deploy Approva Rendering Extension
To deploy the Approva Rendering Extension, you must enable .NET Framework 3.5 by using the Add Roles and Features Wizard. For details, see https://technet.microsoft.com/en-in/library/dn482071.aspx
If the report server and the application server are deployed on different machines, follow the steps below to ensure that you can export reports in the ‘CSV without report format’ through a report subscription.