exchange server subscription edition

Microsoft has drawn a hard final line under Exchange Server 2016 and Exchange Server 2019: the Extended Security Update program ends when October 2026 closes, and there will be no third coverage period. Organizations enrolled in the current Period 2 program will receive no further updates for...

Microsoft is now telling Exchange Server Subscription Edition hybrid customers that, by October 2026 and no later than April 2027, they must install the May 2026 hotfix or newer and move rich coexistence calls from Exchange Web Services to Microsoft Graph. This is not a cosmetic plumbing change...