Using BlackBerry UEM, you can allow certain secure communications protocols, such as TLSv1.0 or TLSv2, for communication with client devices.

You should be careful when you disable protocols. Check with your organization's IT staff to find out which protocols can be safely disabled. Otherwise, you might disable a protocol that's used on your network, and this can disrupt the secure handshake that's required between BlackBerry UEM and users' devices, and users may receive a “Page Not Found” message.

BlackBerry Access for iOS has its own application policy that controls which communications protocol to use.

For more information, see Configure BlackBerry UEM to trust the Exchange ActiveSync server or identity provider certificate in the BlackBerry UEM Administration content.