This started this morning after last night's updates. I've been trying to troubleshoot this off and on all day with little luck. Evolution popped up this morning with a "new account wizard" which was strange since I've been using the same account all along. I went ahead and played along and was unable to get it to create a new account (always hung at the authenticate with exchange screen). Not so much hung as the forward button wouldn't become available. After much messing around with deleting .evolution directory and trying to force it to start I finally was able to get it to create the account using the exchange-connector-setup-2.22 program.
That worked, but when I run exchange it get the following error:
(evolution:8421): e-data-server-ui-WARNING **: Key file does not have key 'exchange:__doe_j;auth_Basic@owa_exchange.server.com_'
And I fail to authenticate to the OWA server. I don't think it's really even trying.
Thanks for your report, It seems that there's something broken in your setup, does it works fine with another new user created on your system? thanks.