HTTP Error 404.3 - Not Found The page you are requesting cannot be served because of the extension configuration. If the page is a script, add a handler. If the file should be downloaded, add a MIME map. - Free Asp.Net,MVC,AngularJs,Jquery,Javascript,Sql Server,WCF,Entity framework snippets and tutorial

HTTP Error 404.3 - Not Found The page you are requesting cannot be served because of the extension configuration. If the page is a script, add a handler. If the file should be downloaded, add a MIME map.

Introduction: In this post I am going to explain how we can solve the “HTTP Error 404.3 - Not Found The page you are requesting cannot be served because of the extension configuration. If the page is a script, add a handler. If the file should be downloaded, add a MIME map.” error when we run the website on IIS.
HTTP Error 404.3 - Not Found


To solve this error follow the below given steps:
11.      Open control panel and click on programs and features.
22.      Click on “turn windows features on or off “option.
33.      Pop up window will be open and look for IIS (internet information services).
44.     Expand the IIS.

55.      After that expand the World Wide Web services.
66.      Expand the Application development Features and select the check boxes as shown attached snapshot:
HTTP Error 404.3 - Not Found

77.      Click the ok button. It would take some time.
This solutions work for me to solve this  problem.

Now run the website and check the result.

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