You have an Exchange Server 2010 organization.
You deploy several Exchange Server 2013 servers to the organization and you deploy the required certificates.
You attempt to connect to an Exchange Server 2013 server by using Outlook Web App and you discover the
error message shown in the exhibit (Click the Exhibit button.)
Exhibit: * Missing*
You need to prevent the error message from appearing when users access Outlook Web App on the new
servers.
What should you do?
A.
Remove the Exchange Server 2010 servers from the organization.
B.
Run the Remove-ExchangeCertificate cmdlet.
C.
From the Exchange Management Console, remove the certificates from the Exchange Server 2010 servers.
D.
From the Exchange Admin Center, modify the properties of the OWA virtual directory.
Explanation:
We remove the Exchange Server 2010 servers certificates. The certificates are removed with the RemoveExchangeCertificate cmdlet.
Note that the Exchange 2010 SSL certificate can be re-used if it contains the correct namespaces. You can
export the SSL certificate from Exchange 2010 and import it into Exchange 2013. However, if the names on the
certificate are not correct, or the certificate is due to expire soon anyway, you may find it easier to simply
acquire a new SSL certificate.
Incorrect answers:
Not A: We must remove the certificate for the Exchange Server 2010 servers. If you just remove the Exchange
Server 2010 servers the certificates for them would still cause problems.
Not C: We cannot remove the certificates from the Exchange Management Console.
Not D: Modifying the OWA virtual directory would not address the certificate problem.
https://technet.microsoft.com/en-us/library/aa997569%28v=exchg.150%29.aspx