We have released Security Updates for Exchange Server SE. Exchange Server 2019 and 2016 ESU updates only.

We wanted to provide an update on Exchange Online EWS deprecation.

We wanted to let you know about upcoming changes to Exchange Online message moderation.

Introducing the Microsoft Graph User Configuration API (preview)

We wanted to let you know of an upcoming change in certificates trusted by Exchange Online.

We wanted to provide the updated Exchange Online SMTP AUTH Basic Authentication Deprecation Timeline.

We wanted to answer some Exchange Online public folder data and retention questions.

We are happy to announce that the Message Trace support using Graph API is now in Public Preview.

We wanted to do a deeper dive into various types of mailbox quotas in Exchange Online.

We are not releasing any Exchange Server Security Updates for January 2026.