What does the 417 Expectation Failed error in Opera mean?

Osama Javaid October 27, 2011
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When searching this site for wallpapers, Opera returns the result ‘417 – Expectation Failed’.

I have the latest Opera 11.52 installed on Windows XP SP2. Only because of this error I have to use Chrome or Firefox. Previously, this issue was on Twitter also, but now it is fixed there. Tell me how to get rid of this?

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  1. Anonymous
    October 28, 2011 at 7:01 am

    Error 417 - Expectation Failed when when uploading images or sending certain text
    http://my.opera.com/community/forums/topic.dml?id=270761

    HTTP Error 417 Expectation failed
    http://www.checkupdown.com/status/E417.html

  2. Jeff Fabish
    October 28, 2011 at 6:48 am

    "The Web server (running the Web site) thinks that the HTTP data stream sent by the client (e.g. your Web browser or our CheckUpDown robot) contains a 'Expect' request which can not be satisfied. The Expect request is fairly generic i.e. loosely defined in the HTTP protocol. It can specify more than one expectation, each of which may be interpreted differently by different Web servers." - CheckUpDown

    In short, HTTP error 417 indicates there was a problem in the application data transfer, whereby the server did not receive all of the packets it was anticipating (or they were out of order). This is error is only thrown by websites that use CheckUpDown. This is an issue with CheckUpDown's servers, so there is little you can do. You may want to inform wallbase.cc's administrator of your issue via their public forum