We have implemented a EWS application to synchronize calendar items using push notifications in Java.
It is working fine on Exchange 2007 with domain controller 2003. We can connect to EWS with an account that has full access rights on some mailboxes.
When we setup another environment using Exchange 2010 on windows 2008 server.
The account cannot login to EWS. The account can login using OWA. When connecting to EWS we get a 401 Unauthorized error.
Any ideas?