To enable HTTP Activation in Windows Server 2012 R2:
- Open Windows Server Manager.
- Select Manage | Add Roles and Features. The Add Roles and Features Wizard is displayed.
- On the Select Installation Type screen, select Role-based or feature-based installation.
- Click Next. The Select Destination Server screen is displayed.
- Select the Application Server that will be communicating with the Image Retrieval API.
- Click Next. The Select Server Roles screen is displayed.
- Click Next to skip to the Select Features screen.
- Expand .NET Framework 4.5 Features.
- Expand WCF Services.
- Select the HTTP Activation check box.
- Click Next. The Confirm Installation Selections screen is displayed.
- Confirm the HTTP Activation feature is selected for installation.
- Click Install.
- To verify HTTP handlers are configured correctly, see Verifying HTTP Handler Mapping.