Microsoft releases Windows Server 2025 Preview Build 26227

Don’t forget to read the known issues before installing this build

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Published onMay 31, 2024

published onMay 31, 2024

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Microsoft released new build of the next Windows Server Long-Term Servicing Channel (LTSC) Preview build 26227 for Windows Insiders.

The new build 26227 comes withDesktop experience and server code installaiton options for Datacenter and Annual Channel for Container Host and Azure Edition (for VM evaluation only).

Here is what thechangelog in the official blogsays:

What’s New

[NEW] Delegated Managed Service Accounts (dMSA)

A new account type known as delegated Managed Service Account (dMSA) is now available that allows migration from a traditional service account to a machine account with managed and fully randomized keys, while disabling original service account passwords. Authentication for dMSA is linked to the device identity, which means that only specified machine identities mapped in AD can access the account. Using dMSA helps to prevent harvesting credentials using a compromised account (kerberoasting), which is a common issue with traditional service accounts.

More Server Message Block (SMB) protocol changes.

Starting with Build 26097 and higher, we are introducing the following Server Message Block (SMB) protocol changes for QUIC, signing, and encryption:

SMB over QUIC client and server disable: Administrators can now disable the SMB over QUIC client and SMB over QUIC server options with Group Policy and PowerShell.

SMB over QUIC client and server connection auditing: Successful SMB over QUIC client and SMB over QUIC server connection events are now written to the event log to include the QUIC transport.

SMB signing and encryption auditing: Administrators can now enable auditing of the SMB server and client for support of SMB signing and encryption. This shows if a third-party client or server doesn’t support SMB encryption or signing. You can configure these settings with PowerShell and Group Policy.

Windows Server Flighting is here!!

If you signed up for Server Flighting, you should receive this new build automatically later today. For more information, see Welcome to Windows Insider flighting on Windows Server – Microsoft Community Hub The newFeedback Hubapp is now available forServer Desktopusers!

The app should automatically update with the latest version, but if it does not, simply Check for updates in the app’s settings tab.

The Redmond tech giant also mentioned the update’s known issues and assured these will be fixed in future release:

Also, if you Secure Launch/DRTM code path enabled, Microsoft recommended not to install this build. Here is the other information on the build:

The official blog also mentioned that this Windows Server Preview will expire on September 15, 2024.

If you are still not part of Windows Insiders for Business, you can sign up today at theofficial website. The registered insider user can go directly to theWindows Server Insider Preview download page.

Have you installed Windows Insider’s new build? If so, share your experience with our readers in the comments below.

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Copilot in Outlook will generate personalized themes for you to customize the app

Microsoft will raise the price of its 365 Suite to include AI capabilities

Death Stranding Director’s Cut is now Xbox X|S at a huge discount

Outlook will let users create custom account icons so they can tell their accounts apart easier

Microsoft releases Windows Server 2025 Preview Build 26227