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

Outlook can alert you to a variety of actions with sound effects. You can control some of these sounds through the Outlook options pane, while other settings are controlled by Windows. New message notifications When you receive a new message in Outlook, you can receive alerts with sounds, a message pop-up notification, or simply a change in the Outlook icon in the status bar. To change these ...

Welcome to the June 2026 edition of What's New in Microsoft 365 Copilot!  

Happy New Year, and welcome to the January 2026 update! We’re excited to share that Agent Mode in Excel is now generally available in Excel on Windows and is rolling out to Excel on Mac over the coming days. This month also brings the general availability of the full Power Query experience in Excel for the web. In addition, Windows Insider users can access new import functions and ...

BitLocker is a Windows security feature that protects your data by encrypting your drives. This encryption ensures that if someone tries to access a disk offline, they won’t be able to read any of its content. BitLocker is particularly valuable if your device is lost or stolen, as it keeps your sensitive information secure. It’s designed to be user-friendly and integrates seamlessly with ...

Training: In Microsoft Outlook, you can share your calendar with other people and open a shared calendar. Learn how in this online video.

Today’s announcement and the retirement of EWS apply only to Microsoft 365 and Exchange Online (all environments); there are no changes to EWS in Exchange Server. Why is EWS being retired? EWS was built nearly 20 years ago, and while it served the ecosystem well, it no longer aligns with today’s security, scale, or reliability requirements.

Second half of 2027: Microsoft will announce the final removal date for SMTP AUTH Basic Authentication. These updates are intended to give customers with tenants in our service (all cloud environments) more time to plan, validate, and deploy modern authentication alternatives, while maintaining a clear path toward stronger default security.

How to request a refund for Microsoft Store apps on a Windows PC Digital goods like apps, games, add-on content, subscriptions, movies, TV shows, and books aren't refundable unless the offer or applicable law states that you're eligible for a refund.