Microsoft will enable Exchange Extended Protection by default this fall

Microsoft recommends doing the following, depending on what security update you have installed:

• Aug 2022 SU or later and EP enabled: Install CU14 (no special steps needed).
• Aug 2022 SU or later, but EP not yet enabled: Install CU14 with the default of 'Enable EP' left on.
• Exchange Server version earlier than the Aug 2022 SU: "We send you thoughts and prayers, and very strong but gentle guidance to update your servers to the latest SU immediately."