Error in "web.config" file when I load page in online

Question

I am fresher developer in ASP.NET(4.0). I develop a website and it completely works in my local system. But now I upload all files to a server, and when I load any pages, an error occurs in the Web.config file.

My Web.Config Code is this:

  <?xml version="1.0" ?>
    <configuration>
        <connectionStrings>
        </connectionStrings>
    <system.web>
        <compilation debug="true" targetFramework="4.0"/>
        <customErrors mode="Off"/>
        <authentication mode="None"/>
    </system.web>
    </configuration>

The error is this (when I run at server):

Server Error in '/' 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 attribute 'targetFramework'. Note that attribute names are case-sensitive.

Source Error:

</connectionStrings>
    <system.web>
        <compilation debug="true" targetFramework="4.0"/>
    <customErrors mode="Off"/>
<authentication mode="None"/>

Version Information: Microsoft .NET Framework Version:2.0.50727.5456; ASP.NET Version:2.0.50727.5456

Answer 1

In IIS, try setting your website's Application Pool's .NET Framework version to 4.0.

If your site is running on a hosting provider's server, and you don't have remote desktop access to it, they should have a way of setting the app pool's .net framework version somewhere within their website administration tool.

Answer 2

Just check the domain service settings, I am not clear about all the settings step but first of all you must set the target to 4.0 from the settings.