Most RecentNewest TopicsMost LikesMost ViewedIntroducing 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. Exchange Online EWS, Your Time is Almost Up We wanted to provide an update on Exchange Online EWS deprecation. Skype for Business Server Hybrid: Prepare for EWS Retirement in Exchange Online Reminder: Exchange 2016 and 2019 ESU Program Ends in October 2026 We wanted to provide a reminder that Exchange 2016 and 2019 ESU program ends in October 2026. Deprecation of the -Credential Parameter in Exchange Online PowerShell Exchange Online PowerShell -Credential parameter will be deprecated soon. Cross-Tenant Message Recall in Exchange Online We wanted to announce cross-tenant Message Recall in Exchange Online! Addressing Exchange Server May 2026 vulnerability CVE-2026-42897 We wanted to tell you how to address the Exchange Server May 2026 vulnerability CVE-2026-42897. Released: June 2026 Exchange Server Security Updates We have released Security Updates for Exchange Server SE. Exchange Server 2019 and 2016 ESU updates only. Writeback for Cloud-Managed Remote Mailboxes: Now in Public Preview We are happy to announce public preview of writeback for cloud-managed remote mailboxes! Upcoming retirement of OWA Light in Exchange Server We wanted to tell you that we will be retiring OWA Light in Exchange Server.