Windows Server 2025 Build 26311: Focus on Security, No Major New Features

On October 25, 2024, Microsoft dropped a new preview build of Windows Server 2025, version 26311, via the Windows Server Insider Program. However, if you’re expecting an exciting array of new features, you might want to pump the brakes. This release doesn’t roll out any groundbreaking functionalities compared to its predecessor, build 26304. Let's dig deeper into what this build means for administrators and how you can leverage PowerShell cmdlets for enhanced security.

Same Old, Same Old: What’s New?​

While build 26311 doesn’t present any novel functionalities, it is critical to highlight essential security advancements that came with the previous build, 26304. This version introduced the Windows Defender Application Control for Business (WDAC), a powerful security layer that enhances server protection.

WDAC: A Security Shield​

WDAC is a software-based approach designed to minimize the attack surface by creating a whitelist of permitted applications that can execute on your windows server. Think of it as setting up a highly exclusive club: only the ‘members’ you approve get access. This means that any uninvited guests (malicious software, in this case) won’t even get a chance to enter.
Microsoft has also crafted a standard policy for WDAC, allowing system administrators to deploy this security measure easily via PowerShell cmdlets. For those unfamiliar with PowerShell, consider it the ultimate tool for automating tasks across Windows servers—like a Swiss Army knife that allows you to manage, configure, and diagnose your server domains effectively.

Security Baseline Preview: Peace of Mind​

Another noteworthy feature from the earlier build is the Windows Server 2025 Security Baseline Preview. This tool assists system administrators in setting up a comprehensive security posture.

• Customizable Security Settings: It offers over 350 preconfigured Windows security settings that one can tailor to either physical servers or virtual machines (VMs).
• PowerShell Integration: Again, administrators can use OSconfig and PowerShell cmdlets to install a default policy on servers, ensuring a robust security baseline is maintained.

Navigating the Technical Landscape​

The latest build is now available for download, though it’s worth noting that its availability is limited in certain regions. Moreover, there’s a slight silver lining—this preview’s longevity extends until September 15, 2025, allowing somewhat more breathing room for users to transition and adapt.

Conclusion: Security Comes First​

Even though build 26311 may seem like a roll of the dice rehashing the previous iteration, it underscores an essential mantra in the realm of IT—security, security, security. Employing features like WDAC and leveraging the Windows Server 2025 Security Baseline Preview are steps in the right direction for anyone managing server environments.
For system administrators navigating this evolving landscape, keeping abreast of such updates and utilizing effective tools to lock down your servers will be paramount. After all, in today's digital frontier, it’s better to be safe than sorry!
If you're keen on implementing these features, dust off your PowerShell skills and dive into the configurations that can fortify your Windows Server 2025 environment. After all, when it comes to server security, being proactive is always preferable to a cleanup operation post-breach.
Source: www.techzine.eu Microsoft releases new preview build of Windows Server 2025