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 Common HTTP Errors
    Error 400 :   Bad Request
    Error 401 :   Unauthorised
    Error 403 :   Forbidden
    Error 404 :   Not found
    Error 500 :   Server Error
 

 

 

 

HTTP 400

Unrecognisable Instructions to the Server

Most likely causes:

The browser you use sent instructions which are not
recognised by the server.

What you can try:

Refresh the page.   
Go Back to the previous page.   

More Information

This error (HTTP 400 Bad Request) means that the browser makes a request that the server does not understand.


Technical Information


More technical information can be found in :

Microsoft Product Support Services web site

http://support.microsoft.com

There you can perform a title search for the words:

HTTP  and  400.

 
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