Microsoft has launched the most recent Windows Server construct for individuals of the Windows Server Insider Program. The new construct quantity is 26311. Keep in thoughts that this and long term Windows Server Insider builds now have the Windows Server 2025 branding.

Unfortunately, the professional exchange log that Microsoft revealed for Windows Server 2025 preview construct 26311 is the same to the exchange log that was once revealed with the closing preview construct, which had the model quantity 26304. That earlier construct added a significant new function, the Windows Defender Application Control for Business (WDAC), which provides some new security measures for Windows Server 2025.

Keeping all that during thoughts, here’s the broadcast exchange log for Windows Server 2025 preview construct 26311:

What’s New

[NEW] Windows Defender Application Control for Business (WDAC)

Windows Defender Application Control (WDAC) for industry is a software-based safety layer that reduces assault floor through implementing an specific checklist of application this is allowed to run. For Windows Server 2025, now we have equipped Microsoft outlined ‘default policy’ which may also be implemented to the server by the use of PowerShell cmdlets, powered through our ‘Security configuration platform called ‘OSconfig’. To be told extra, please overview Windows Defender Application Control for Business (WDAC) – Microsoft Community Hub.

Windows Server 2025 Security Baseline Preview

Beginning with construct 26296, we’re happy to announce the supply of the Windows Server 2025 Security Baseline Preview. You can permit safety proper from the beginning through making use of the really helpful safety posture on your software or VM function thru utility of a adapted safety baseline, with over 350 preconfigured Windows safety settings that will let you follow and put in force granular safety settings that strengthen absolute best practices really helpful through Microsoft and Industry requirements. We have arranged the Windows Server 2025 Security Baseline content material into 3 classes in response to server function:

• Domain Controller (DC)
• Member Server
• Workgroup Member

Note: You will have to preview the safety baseline best on take a look at methods. While there’s a ‘Remove’ command, now not all configurations may also be reversed. To be told extra, please overview Announcing Windows Server 2025 Security Baseline Preview – Microsoft Community Hub.

Windows Server Flighting is right here!!

If you signed up for Server Flighting, you will have to obtain this new construct robotically later lately. For additional info, see Welcome to Windows Insider flighting on Windows Server – Microsoft Community Hub

The new Feedback Hub app is now to be had for Server Desktop customers! The app will have to robotically replace with the most recent model, but when it does now not, merely Check for updates within the app’s settings tab.

Known Issues

Download Windows Server Insider Preview (microsoft.com)

Flighting: The label for this flight would possibly incorrectly reference Windows 11. However, when decided on, the package deal put in is the Windows Server replace. Please forget about the label and continue with putting in your flight. This factor will likely be addressed in a long term unencumber.

WinPE – Powershell Scripts: Applying the WinPE-Powershell non-compulsory element does now not correctly set up Powershell in WinPE. As a consequence, Powershell cmdlets will fail. Customers who’re depending on Powershell in WinPE will have to now not use this construct.

If you might be validating upgrades from Windows Server 2019 or 2022, we don’t suggest that you simply use this construct as intermittent improve disasters had been known for this construct.

This construct has a subject the place archiving eventlogs with “wevetutil al” command reasons the Windows Event Log provider to crash, and the archive operation to fail. The provider will have to be restarted through executing “Start-Service EventLog” from an administrative command line steered.

If you might have Secure Launch/DRTM code trail enabled, we don’t suggest that you simply set up this construct.

Available Downloads

Downloads to sure nations will not be to be had. See Microsoft suspends new gross sales in Russia – Microsoft On the Issues.

• Windows Server Long-Term Servicing Channel Preview in ISO structure in 18 languages, and in VHDX structure in English best.
• Windows Server Datacenter Azure Edition Preview in ISO and VHDX structure, English best.
• Microsoft Server Languages and Optional Features Preview

Keys: Keys are legitimate for preview builds best

• Server Standard: MFY9F-XBN2F-TYFMP-CCV49-RMYVH
• Datacenter: 2KNJJ-33Y9H-2GXGX-KMQWH-G6H67
• Azure Edition does now not settle for a key

Symbols: Available at the public image server – see Using the Microsoft Symbol Server.

Expiration: This Windows Server Preview will expire September 15, 2025.

You can obtain the new Windows Server preview from Microsoft’s web site.