I migrated an SBS 2008 server to SBS 2011 but the OWA isn't working.
The login screen comes up with the correct OWA 2010 login page, but when I put in the username and password, I get this error:
A server configuration change is temporarily preventing access to your account. Please close all Web browser windows and try again in a few minutes. If the problem continues, contact your helpdesk.
Email is still flowing to mobile devices and is working fine with Outlook on all the computers in the office.
Even if I go to https://new_server.local/owa
from an internal computer, I get exactly the same result.
What am I missing? Is it a setting in IIS?