When attempting to integration UIM 8.2 with the NFA 9.3.1 using the nfa_inventory probe, you may see the error below in the nfa_inventory probe log:
You must install WCF Activation under the .NET Framework 3.5.1 features in Server Manager.
1. Open Server Manger - Start->Administrative Tools->Server Manager
2. Click on Features then Add Features
3. Expand .NET Framework 3.5.1 Features and check the box for "WCF Activation"
4. Click Next and then Install.
5. Once installed recycle the nfa_inventory probe in UIM and check to see that the error no longer appears.