Most RecentMost LikesMost ViewedAddressing 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. Active Directory schema extension issue if you use a Windows Server 2025 schema master role We wanted to let you know of an Active Directory replication issue you might run into if you use Windows Server 2025 schema master role. Introducing Exchange Online Delicensing Resiliency to protect against unintended delicensing actions We are announcing a feature that allows admins to add protection against accidental delicensing of Exchange Online mailboxes. Update to EWS Access for Kiosk / Frontline Worker Licensed Users We wanted to provide an update on EWS access for Kiosk / Frontline Worker licensed users. Deprecation of the -Credential Parameter in Exchange Online PowerShell Exchange Online PowerShell -Credential parameter will be deprecated soon. Limiting Onmicrosoft Domain Usage for Sending Emails We are announcing that all Exchange Online customers who send external email should start switching to custom (aka vanity) domain names. Update 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. Introducing Exchange Online Tenant Outbound Email Limits We’re introducing new tenant-level outbound email limits (also known as the Tenant External Recipient Rate Limit or TERRL). General Availability of Mailbox Import and Export Microsoft Graph APIs Announcing General Availability of Mailbox Import and Export Microsoft Graph APIs.
