Resolve "An error occurred during the processing of a configuration file required to service this request" in EngageOne Content Author 6.0

Product Feature: CA Client

Issue

When accessing the url http://localhost/CCMcontentAuthor/ Server, the following error is received

'/CCMContentAuthor' 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.web.extensions. Source Error: Line 198: Line 199: Line 200: Line 201: Line 202: Source File: C:\Program Files\PBBI CCM\DOC1\Content Author\Client\web.config Line: 200

Cause

This is an IIS configuration error.

Resolution

UPDATED: November 13, 2017
You should check the following:
  1. Run the Internet Information Services (IIS) Manager from the Control Panel Administrative Tools/IIS Manager.
  2. For later versions of IIS (v7 and above), expand the tree to Sites/Default Web Site and right-click on CCMContentAuthor.
  3. Select Manage Application/ Advance settings from the drop-down menu and set ApplicationPool to ASP.NET v4.0.
  4. Select Application Pools from the tree, right-click on ASP.NET v4.0 and select Advanced Settings.
  5. Set .NET Framework version to v4.0
  6. Set Enable 32-Bit Applications to True.