Performed get-accepteddomain | FL DomainName, ISCoexistenceDomain
all domain names return as False and I do NOT have a record for mydomain.mail.onmicrosoft.com
In Organization Configuration (Exchange Management Console) a Hybrid Configuration exists but I can not modify it.
When I run "Manage Hybrid Configuration" and select "add" to select the domains to configure as part of the hybrid configuration, the select accepted domains says 0 domains found and then stops working with an error "Microsoft Management Console has stopped working" close the program.
Federated Trust is configured and working.
This is an office 365 hybrid install with an Exchange 2010 SP3 serving as Hub transport, Client Access
SSO is working, Directory Sync is working