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.

We wanted to explain why using Local Move Requests in Exchange Online is not a good idea as a general practice.

The Mailbox External Recipient Rate Limit in Exchange Online is being canceled.

We want to inform our users and organizations about an important upcoming change regarding Exchange ActiveSync (EAS) device connectivity to Exchange Online.

We are happy to announce new parameters to help manage holds on inactive mailboxes in Exchange Online.

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

We wanted to provide an update on EWS access for Kiosk / Frontline Worker licensed users.

We are announcing the Public Preview of the Exchange Online Admin API.

We are not releasing any Exchange Server Security Updates for November 2025