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Internet Solutions
     
 

404.5

Denied by request filtering configuration

 
  Description  
     
  For better security, the web server has a list of characters it will not allow in the address (URL) field. One or more of these characters appears in the address field, so access to the page was stopped.   
   
  Example  
     
 
Windows
Server Error

404.5 - URL sequence denied.

The specified URL sequence is not accepted by the server.

 
 
Error messages will differ depending on the web server and if replaced by the web site designers.
 
   
  Occurrences  
     
 
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Frequency is relative to other Internet warnings and errors.
 
   
  Solutions and Fixes  
     
 
  Date Votes ratings
Fix Web Address
9
    Add    Flag
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Check the web URL address. Perhaps there is an typing error. For example, you might need a "https://" style address rather than "http://".

Also check if the address has a non-standard character. The only allowed characters are A-Z, a-z, 0-9 and the symbols $-_.+!*'() (a comma is not allowed).

 
   
 
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  FaultWire Staff
Posted: 8-Oct-2008
 
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Notify Webmaster
7
    Add    Flag
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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.

 
   
 
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  FaultWire Staff
Posted: 8-Oct-2008
 
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  Official Explanation  
     
 
  technical detailsThe requested URL contains a character sequence that is blocked by the server.

(From Microsoft - The HTTP status codes in IIS 7.0)
Additional notes for the web server administrator - Microsoft Knowledgebase article 942053.

 
   
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  Notes  
     
  "404.5 - Denied by request filtering configuration" 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.