Lors du demarrage d´un site internet j´ai ce message qui arrive et cela bloque le site! alors qu´il marche chez mes amis que faire svp??

Server Error in ´/´ Application.

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Runtime Error
Description: An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely ( for security reasons). It could, however, be viewed by browsers running on the local server machine.

Details: To enable the details of this specific error message to be viewable on remote machines, please create a < customErrors> tag within a " web.config" configuration file located in the root directory of the current web application. This < customErrors> tag should then have its " mode" attribute set to " Off".

< !-- Web.Config Configuration File -->

< configuration>
< system.web>
< customErrors mode="Off"/>
< /system.web>
< /configuration>

Notes: The current error page you are seeing can be replaced by a custom error page by modifying the " defaultRedirect" attribute of the application´s < customErrors> configuration tag to point to a custom error page URL.

< !-- Web.Config Configuration File -->

< configuration>
< system.web>
< customErrors mode="RemoteOnly" defaultRedirect="mycustompage.htm"/>
< /system.web>
< /configuration