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404.7
File extension denied
Description
Likely the address line is mistyped with a wrong file extension, but it could be the web server is not configured properly.
Example
Server Error
404.7 - File extension denied.
The specified file extension of the resource is not accepted by the server.
Error messages will differ depending on the web server and if replaced by the web site designers.
Occurrences
Frequency is relative to other Internet warnings and errors.
Solutions and Fixes
Fix Address
8
Correct the mistyped URL address with a valid file extension. For example, you mistyped:
http://www.SomeSite.com/index.htm1
Note the mistype at the end using a one instead of "L" as in "html".
FaultWire Staff Posted: 17-Nov-2009
Fix Server Configuration
8
The web server may be configured incorrectly. If this is the problem, the site owner/webmaster will have to fix the problem.
FaultWire Staff Posted: 8-Oct-2008
Notify Webmaster
7
You might notify the webmaster about the issue. Include the error number and the address (URL) where the error occurred along with any other relevant details.
Many sites use an email address in the form webmaster@sitename.com where you replace sitename.com with the web sites address (don't include a www). Keep in mind with the amount of spam, they may use a different address and/or it might get ignored. Check the websites' contact information to get reliable contact information.
"404.7- File extension denied" is only supported by Microsoft IIS (Internet Information Services) web server version 7 and later.
The four hundred series of errors indicate something was sent to the remote web server incorrectly.
While we believe this information up to date and accurate, FAQware is not responsible for any inaccuracies. If you find something that is out of date or inaccurate, please let us know at
so we can correct it.
The requested file name extension is not allowed.
