So we're migrating from an Exchange 2010 environment to Exchange 2013. We use a single namespace ("exchange.contoso.com") for both internal and external clients.
In testing, we have taken a few machines running outlook 2013 and 2010, and edited their hosts file such that "exchange.contoso.com" points toward the new exchange 2013 environment, rather than the 2010 environment for our users. So far so good,
they can connect, no issues.
However, when we move a mailbox to the 2013 environment, the outlook client comes back with "Your Exchange Administrator has made a change which requires you to restart outlook". This error affects both Outlook 2013 and 2010. We do have public
folders in place in exchange 2010, but we have not yet migrated them to 2013 (because the user's still are on 2010).
Repairing the profile is no help, and recreating the profile does not work either. Any thoughts?