[Evolution] Bug#463624: Can no longer authenticate OWA account after server-side change

[Chris Carr]

package: evolution-exchange
version: 2.12.2

I used to connect to my employer's Exchange server via 
https://webmail.myorg.gov.uk/exchange. In a browser, that URL would 
immediately pop up a dialog box asking for username and password, then 
after successful login it would take me straight to my inbox. In 
Evolution, it just worked and I could see my inbox as soon as Evolution 
opened.

Now they've changed the webmail URL to http://webmail.myorg.net, and 
something is different. Instead of the browser popping up a dialog box, 
I'm redirected to a new page called 
https://webmail.myorg.net/LONG_STRING_LIKE_A_UNIQUE_SESSION_ID/login.htm, 
and the username/password fields are on the page itself rather than in a 
dialog box.

Evolution is no longer able to authenticate me using this new mechanism. 
It just pauses for a few seconds and says "an unknown error occurred".

Is this a known issue? Is there a workaround?

Thanks,

Chris