Most RecentNewest TopicsMost LikesMost ViewedUpdate Your Exchange SE Hybrid On-premises Rich Coexistence to Graph Configure Exchange Server SE to move your Hybrid rich coexistence scenarios to Graph API calls. Exchange Online EWS, Your Time is Almost Up We wanted to provide an update on Exchange Online EWS deprecation. Cross-tenant Free/Busy, MailTips, and Calendar Sharing are moving to Cross-Tenant Access Policy We wanted to provide information related to migration of existing Exchange Online Organization Relationships to the new sharing model. Updated Exchange Online SMTP AUTH Basic Authentication Deprecation Timeline We wanted to provide the updated Exchange Online SMTP AUTH Basic Authentication Deprecation Timeline. Writeback for Cloud-Managed Remote Mailboxes: Now Generally Available Writeback for cloud-managed remote mailboxes is now Generally Available! Help us shape Exchange Server on-premises to different online org Free/Busy after EWS retirement We wanted feedback about Exchange Server on-premises to different online org Free/Busy sharing, after EWS retirement. Introducing EWSAllowedAppIDs: Preparing for the Final Phase of EWS Retirement We wanted to share details about the EWSAllowedAppIDs, to help you manage retirement of EWS applications in Exchange Online. Understanding the new 100 GB mailbox entitlement for Microsoft 365 Business suites We wanted to show Administrators how recent mailbox quota changes for Microsoft 365 Business suites will apply to their users. Upcoming retirement of OWA Light in Exchange Server We wanted to tell you that we will be retiring OWA Light in Exchange Server. Retirement of Direct Exchange ActiveSync Certificate-Based Authentication by End of 2026 We are announcing the deprecation of Exchange ActiveSync (EAS) certificate-based authentication (CBA) directly to Exchange Online.