Today I installed Clean Windows Web Server 2008 R2 64-bit with IIS 7.5. To my surprise opening .NET 4.0 application I received the following error: IIS 7.5 Detailed Error - 500.21 - Internal Server ErrorServer Error in Application "DEFAULT WEB SITE"Internet Information Services 7.5[Error Summary]HTTP Error 500.21 - Internal Server ErrorHandler "PageHandlerFactory-Integrated" has a bad...