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Opera 10.51: No Referer header found

Automagical update breaks http://validator.w3.org/check/referer



2:58 am on Mar 29, 2010 (gmt 0)

5+ Year Member

I recently said 'yes' to an automagical upgrade to 10.51 and now notice that, without (knowingly) changing anything in my Opera preferences etc,
footer links to
lead to an error page:

Sorry! This document can not be checked.
No Referer header found!

You have requested we check the referring page, but your browser did not send the HTTP "Referer" header field. This can be for several reasons, but most commonly it is because your browser does not know about this header, has been configured not to send one, transferred the referring document over a secure protocol such as https but is accessing the validator over ordinary non-secure http, or is behind a proxy or firewall that strips it out of the request before it reaches us.

This is not an error in the referring page!

Please use the form interface on the Validator Home Page to check the page by URL.

A quick skim of my
file only has one instance of the string
Home URL=http://example.com/
) and makes no mention at all of

I'll appreciate any tips on what to edit in order to fix what I regard as yet another bug in what was, once upon a time, the best browser

Version    10.51 
Build 3315
Platform Win32
System Windows XP


4:02 am on Mar 29, 2010 (gmt 0)

WebmasterWorld Senior Member tedster is a WebmasterWorld Top Contributor of All Time 10+ Year Member

Did you look under Tools > Preferences > Advanced > Network to make sure that "Send referrer information" is checked?


6:56 pm on Mar 29, 2010 (gmt 0)

5+ Year Member

Hi tedster,

I hadn't... but I have now, and it WAS checked (by default, I guess)

So, thanks for the suggestion... but I'm still none the wiser


8:05 pm on Mar 29, 2010 (gmt 0)

5+ Year Member

OK... I have found a work-around



I'm curious to know why - in Opera - only the latter works whilst the former works in FF, IE and Chrome


9:24 pm on Mar 29, 2010 (gmt 0)

WebmasterWorld Senior Member 10+ Year Member

I rolled back to my 9.xx version of Opera after less than 24 hours. 10.5xx is way, way too buggy for me. Feels very much like a rushed release...

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