Configuration Error: Unrecognized attribute 'validateRequest'…

Problem

You get this error:

The Web.config file for your application is set with the Request Validation feature turned off.

Description

Microsoft added a new feature in .NET Framework 1.1 called Request Validation. By default, each web page is checked to see that no raw XML is submitted. Request Validation is not required for applications. Details can be found at:

http://www.asp.net/faq/RequestValidation.aspx

Applications built with Iron Speed Designer assume you are running .NET Framework version 1.1. If you have both .NET Framework version 1.0 and .NET Framework 1.1 installed on your machine, this assumption may not always be correct. Even though .NET Framework version 1.1 is installed, your system (Microsoft IIS) may be configured to run applications under .NET Framework version 1.0.

Solution

Option #1. To configure your application to work under .NET Framework 1.0, remove this line from your application’s Web.config file:

It’s best to modify both the application’s Web.config file, which is located in:

…\<Application Folder>\Web.config

Option #2. Alternatively, you can switch your system to run .NET Framework 1.1. See Verifying the .NET Framework was Installed after Microsoft IIS for details on how to properly install and configure the .NET Framework so that it runs automatically.