Steps to resolve:
1. Launch Server Manager
2. Navigate to Add Roles or Features
3. Expand down to "Features" in list of pages on the left
4. Expand ".Net 4.5 Features", or a later version of .NET, depending on your installation
5. Under "WCF Services", check the box for "HTTP-Activation"
6. Click "Install" Button
7. Restart server for the changes to take effect.
8. Repeat this process for both the APM web and application servers