When installing Asset Manager, the message is received during the check for prerequisites:
"IIS - .NET 3.5 WCF HTTP and Non-HTTP Activation not installed"
Click the Start button, and then click Control Panel.
Click Programs, and then click Programs and Features.
On the Tasks menu, click Turn Windows features on or off.
Find the WinFX node, select and then expand it.
Select the WCF Non-Http Activation Components box and save the setting.