Error message when you try to open a Web page that is hosted on IIS 7.0: "HTTP Error 404.0 - Not Found"

Article ID: 942041 - View products that this article applies to.

SYMPTOMS

When you try to open a Web page that is hosted on Internet Information Services (IIS) 7.0, you may receive one of the following error messages:

Error message 1

Server Error in Application "ApplicationName"

HTTP Error 404.0 - Not Found

HResult: 0x80070002

Description of HResult: The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.

Error message 2

Server Error in Application "ApplicationName"

HTTP Error 404.0 - Not Found

HResult: 0x8007007e

Description of HResult: The specified module could not be found.

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CAUSE

Error message 1

This problem occurs for one or more of the following reasons:

The specified directory or file does not exist on the Web server.
The URL contains a typographical error.
A custom filter or a custom module restricts access to the file. The filter or the module sends the "HTTP Error 404.0" error message back to the client as a response.

Error message 2

This problem occurs because the requested resource is mapped to a handler component that has dependencies on other files. However, these files are either missing or inaccessible.

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RESOLUTION

Error message 1

To resolve this problem, use one of the following methods:

Make sure that the requested resource is at the location that the URL points to.
Review the URL that you open in the Web browser.
Make sure that no custom filters or modules restrict access to the file that you want to browse.

Error message 2

To resolve this problem, make sure that any dependency files that the handler component has dependencies on can be accessed and are in the correct location.

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