Error c00ce56e in ie

4 03 2008

Quite an interesting problem.

If you set encoding headers for XMLHttpRequests to header('Content-Type' , 'text/html; charset=utf8'); instead of header('Content-Type', 'text/html; charset=UTF-8'); IE7 will give the nice and clear error c00ce56e.

So if you ever get this problem, here's the solution.

update:

Sorry for my brief description of the problem. The problem occurs when setting the charset of a response to a XMLHttpRequest to utf8 instead of UTF-8. IE7 is very strict on naming of the charsets, while Firefox and IE6 (!!!) are a bit more lenient.

I read Microsofts description of the problem at http://support.microsoft.com/kb/304625 where they describe it as "Behavior is by design".

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Date : 4 March 2008
Categories : programming

7 responses to “Error c00ce56e in ie”

4 03 2008: Hjalmar (16:36:04) :

I’ve run into this aswell actually. I dont even recall it giving any errors, just failing silently.. perhaps it was IE6.
4 03 2008: anders (17:13:59) :

It actually works in IE6! but as I wrote in my update, IE7 is much more strict on naming.
13 10 2008: amin (09:38:49) :

Hello, j’ai résolu le problème en enregistrant la page contenant le script ajax en utf-8 sans BOM depuis l’éditeur de code.
Le plus simple est de d’encoder toutes es pages en UTF-8 pour éviter ce genre d’ennuis qui font perdre du temps inutilement.

Merci

Amin
22 04 2009: [MPC] DevBlog » Error C00ce56e (18:40:51) :

[…] Error c00ce56e in ie […]
8 07 2009: marc (14:21:28) :

oh thanks, this saved me a lot of hours on debugging this stupid, intolerant IE

cheers marc
13 11 2009: Andrius (13:56:19) :

You just saved my life, i was working about 24 hour on that and haven’t found solution.
Thanks Thanks Thanks
15 03 2010: Jegust (19:24:45) :

I had a similar error:
Server returning:
Content-Type: text/html; charset=ISO 8859-1
=> c00ce56e in ie

Content-Type: text/html; charset=ISO-8859-1
=> works fine

anders.tyckr.com