1440060 - Error: "Server Error in '/PlatformServices'" while trying to log into BusinessObjects Enterprise XI 3.1 .Net Infoview

When logging into BusinessObjects Enterprise XI 3.1, .NET Infoview, the following error is displayed:

“Server Error in '/PlatformServices' Application.

Configuration Error
Description: An error occurred during the processing of a configuration
file required to service this request. Please review the specific error
details below and modify your configuration file appropriately.

Parser Error Message: Unrecognized configuration
section 'system.webServer'

Source Error:

Line 148: <add key="appKind1" value="InfoView" />
Line 149:</appSettings>
Line 150: <system.webServer>
Line 151: <handlers>
Line 152: <add name="Encyclopedia" path="*.bouitoolkit"
verb="*" modules="IsapiModule"
scriptProcessor="C:\Windows\Microsoft.NET\Framework\v2.0.50727
\aspnet_isapi.dll"
preCondition="classicMode,runtimeVersionv2.0,bitness32"
responseBufferLimit="0" />

Source File: C:\Program Files\Business Objects\BusinessObjects
Enterprise 12.0\Web Content\InfoViewApp\PlatformServices\web.config
Line: 150

--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:1.1.4322.2032;
ASP.NET Version:1.1.4322.2032”

Server Error,PlatformServices , KBA , BI-BIP-DEP , Webapp Deployment, Networking, Vulnerabilities, Webservices , Problem