Endpoint Protection (SEP) 14.2 RU1 MP1 and older clients are not honoring Upgrade Schedule settings in a Client Upgrade Policy.
Client Upgrade Policy was added in Endpoint Protection Manager (SEPM) 14.3 RU3.
Upgrade Schedule policy processing logic was added to SEP clients in 14.3 RU2.
In a SEPM 14.3 RU3 and later environment where a Client Upgrade Policy is applied to various SEP client versions, below is the expected behavior.