Sp 2010 Central Installation Error
Failed to provision the SharePoint Central Administration Web Application. An exception of type System.Runtime.InteropServices.COMException was thrown. Additional exception information: Filename: \\?\C:\inetpub\wwwroot\wss\VirtualDirectories\46824\web.config Line number: 25 Error: There is a duplicate 'system.web.extensions/scripting/scriptResourceHandler' section defined This issue occurred due to running the SharePoint Application pool under .NET framework 4.0, however, the application is compiled with .NET framework 3.5. SharePoint 2010 is running under .NET framework 3.5. So, in this case, please make sure the application pool is running under .NET framework 3.5.