I could find a solution for my IE problem.

IE overwrites the Authorization header in the XMLHttpRequest (/protocol/openid-connect/token) with "Authorization: Negotiate". 

To solve this problem, I added on the client the client_id and client_secret to the form and changed the authorizeClient method, so it checks first the form data instead of the authorization http header.

Have a look at my code: 
https://github.com/gerbermichi/keycloak/commit/32880b210ed27f782a2f9fcd01da4df21ee0953c

Should I create a pull request for the changes or do you have a better solution?

cheers
Michael



Am 22. Juli 2015 um 11:46 schrieb Marek Posolda <mposolda@redhat.com>:

Hi Michael,

No idea if there is other solution, I've never tried SPNEGO with Internet explorer TBH :(

Could you please create JIRA for this?

Thanks,
Marek

On 22.7.2015 10:07, Michael Gerber wrote:
Hi all

My kerberos configuration works fine with FireFox and Chrome, but it does not work with IE.
It shows a prompt where the user has to enter a username and password.

I can successfully get an access code, but I can not get an access token, because IE overwrites the Authorization header in the AJAX request. (see http://stackoverflow.com/questions/28615850/internet-explorer-11-replaces-authorization-header)

I can fix this by adding 
document.execCommand('ClearAuthenticationCache', 'false');
above of 
var req = new XMLHttpRequest();
approximately at the line 374 in the keycloack.js file.

Is there another solution for this problem?

cheers
Michael


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