When users connect to a Virtual Service using both ActiveSync and OWA from the same client IP address and using the same username, it will cause the OWA session to log out. This can be prevented by separating and distinguishing these two logins.

To do this, create two separate SSO domains - one for OWA and one for ActiveSync. Both SSO domains can have the same details except for the Logon Format - this needs to be set to Principalname in one SSO domain and Username in the other.

This should result in the two connections being separated and using different logon formats, that is, user@domain.com and domain\user, and therefore ActiveSync will not cause OWA to log out when using the same IP address.