Get Ready for Microsoft Ignite 2018

Unless you’ve been living under an IT rock, you’ll know that Microsoft Ignite is happening soon. September 24th to 28th to be exact, in Orlando Florida. If you didn’t buy a ticket already then I’m sorry to break to you that you are too late. It’s sold out! But it’s not all bad news; far…


Deploy Exchange Server 2019 on Windows Server Core

Hurrah! If you have not yet heard: Exchange Server 2019 Public preview was announced earlier, and it is the first version of Exchange that you can install on Server Core! Now, while that’s great news, if you haven’t worked on Server Core, there may be bit of a learning curve. The purpose of this post…


Exchange Server 2019 Public Preview

We’re pleased to announce a preview build of Exchange Server 2019 is now available (download removed as Exchange 2019 is now released). We strongly believe Office 365 delivers the best and most cost-effective experience to our customers, but we understand that some customers have reasons to remain on-premises. Exchange Server 2019 is designed to deliver…


Issue with July Updates for Windows on an Exchange Server

The Exchange team is aware of issues with the Windows Operating System updates published July 10th, 2018 causing Exchange to not function correctly. The Windows servicing team has advised us that they will be releasing updates to the affected packages. We encourage Exchange customers to delay applying the July 10th updates, including the security updates…


Upcoming changes to Exchange Web Services (EWS) API for Office 365

Over the last few years, we have been investing in services that help developers access information in Office 365 in a simple and intuitive way, specifically through Microsoft Graph.  Microsoft Graph and the use of OAuth 2.0 provide increased security and seamless integration with other Microsoft cloud services and is rapidly expanding developer access to…


Resource Based Throttling and Prioritization in Exchange Online Migrations

We often get questions about throttling in Mailbox Replication Service (MRS) based migrations in Exchange online. When migrating, you may see messages such as StalledDueTo_TargetDiskLatency for some periods of time. These messages come from our resource-based throttling infrastructure in Exchange Online. This is how this would look like in the output of Get-MoveRequestStatistics: PS C:\>…


Update on mail flow insights

Last month, we announced the release of mail flow insights in the Office 365 Security & Compliance Center in this blog post. We’re making changes to the mail flow insights dashboard to make it more intuitive. These changes are currently in deployment, and will be available in the week of June 25, 2018. We’ve changed…


Correcting Shared Mailbox provisioning and sizing

We are correcting how shared (and resource) mailboxes are created in Exchange Online. As per our documentation (here and here), shared and resource mailboxes in Exchange Online should be created with the size of 50GB and if a larger size is desired, a license should be assigned to the mailbox. For some time now, though,…

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Announcing the support for modern public folder migrations without dumpster data

Long time Exchange administrators will remember that Exchange Server had a feature that was for a while unceremoniously referred to as the “dumpster”. We have since renamed the feature to a more descriptive Recoverable Items Folder. This blog post also contains a bit of history of this feature for those interested. Up to now, during…