In Windows Server 2008 R2, additional setup is required to enable the Workflow web service. The Workflow web service application pool must be enabled to run 32-
bit applications. Otherwise, the Workflow service will fail. To set up the application pool to run 32-bit applications, perform the following steps:
1. Go to the IIS console and access the web server that you installed the Workflow web service on.
2. Under <Your web server> | Application Pools, select the Dynamics AX Workflow application pool.
3. Under Actions, go to Advanced Settings…. In the Advanced Settings window, set the Enable 32-Bit Applications property to True. When
complete, click on the OK button to save the changes.
After performing these steps, the Workflow web service can then be used by Dynamics AX to process Workflows