current my system have 4 mailbox (CAS+MBX) exchange 2013 CU20 and 2 server edge . we have running hybrid email with office365. Now we want upgrade to CU23 lastest version. please help upgrade this
need extend schemas ? if no , then i only need update one by one all mailbox, after that to two edge ?
@Tien Ngo Thanh
There are schema changes when updating from Exchange 2013 CU 20 to CU 23. Your update order will be mailbox server first, then the edge servers last.