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Internet Solutions
     
 

406

Not Acceptable

 
  Description  
     
  A requested item on the page was not found on the server. This may include a language request that the server doesn't support, or a cached page that is invalid.   
   
  Examples  
     
 
Windows
Server Error

406 - Client browser does not accept the MIME type of the requested page.

The page you are looking for cannot be opened by your browser because it has a file name extension that your browser does not accept.

Apache
Not Acceptable

Client browser does not accept the MIME type of the requested page.


Web Server at ...

 
 
Error messages will differ depending on the web server and if replaced by the web site designers.
 
   
  Occurrences  
     
 
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  Solutions and Fixes  
     
 
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  FaultWire Staff
Posted: 8-Oct-2008
 
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  Official Explanation  
     
 
  technical details

The resource identified by the request is only capable of generating response entities which have content characteristics not acceptable according to the accept headers sent in the request.

Unless it was a HEAD request, the response SHOULD include an entity containing a list of available entity characteristics and location(s) from which the user or user agent can choose the one most appropriate. The entity format is specified by the media type given in the Content-Type header field. Depending upon the format and the capabilities of the user agent, selection of the most appropriate choice MAY be performed automatically. However, this specification does not define any standard for such automatic selection.

Note: HTTP/1.1 servers are allowed to return responses which are not acceptable according to the accept headers sent in the request. In some cases, this may even be preferable to sending a 406 response. User agents are encouraged to inspect the headers of an incoming response to determine if it is acceptable.

If the response could be unacceptable, a user agent SHOULD temporarily stop receipt of more data and query the user for a decision on further actions.

(From Hypertext Transfer Protocol -- HTTP/1.1)
 
   
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  Notes  
     
  "406 Not Acceptable" is supported by most Web Servers.

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.