I use IIS version 10 and Windows 10 and VisualStudio 2015.
After I add WEB application to IIS site and open it I get error:
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.
I installed IIS sub components from:
Control Panel -> Programs and Features -> Turn Windows features on or off
As described in this post by Mekanik.
Here is screenshot of installed sub components:
But it didn't helped me and still I get the same error.
Any Idea why I keep getting this error above maybe it has something to do with version of IIS 10
?
I had the same problem for a WCF web service. Fixed it as follows: Open - Turn Windows Features ON or OFF, then Enable HTTP Activation
What kind of application are you browsing ? Based on the extension make sure you have proper handler mapping ie IIS Manager => Sites => specific site => Handler mappings
Another thing is in IIS Manager Select the Server (above Application Pools) double click on ISAPI and CGI Restrictions and see if everything is allowed there.
I understand that this is an old issue but in case anyone else comes across it:
It is related to Handler mapping, you need the svc-integrated mapping for the site in question:
In order to make sure this mapping appears you need to go to control panel -> turn windows features on or off -> .NET Framework 4.7 Advanced Services (or equiv .net ver) -> WCF Services -> HTTP Activation
Turn on Http Activation and refresh IIS. This should add the mapping and fix the error.
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