Windows Server 2025 Insider Preview Build 26433 Datacenter Edition

In a digital era where agility, security, and resilience define success, enterprises are constantly seeking ways to future-proof their IT infrastructure. Enter the Windows Server Insider Program — a gateway into the future of Windows Server, offering IT professionals and enterprise architects a unique head-start in shaping and testing tomorrow’s server technologies.

What Is the Windows Server Insider Program?

At its core, the Windows Server Insider Program is Microsoft’s early-access platform for organizations and individuals eager to test pre-release versions of Windows Server. It allows IT departments to explore upcoming features, evaluate improvements, and provide feedback well before general availability — all while aligning their roadmap with Microsoft’s evolving ecosystem.

Strategic Benefits for Enterprise Businesses

1. Early Access to Innovation

Being the first to test new builds offers a strategic advantage. Enterprises can evaluate enhancements such as improved virtualization support, deeper integration with Azure services, and security updates, giving them ample lead time to plan deployments and migrations.

2. Security Readiness

With constantly evolving cybersecurity threats, security must be proactive, not reactive. Insider builds often preview cutting-edge security features, like Just-in-Time administration and advanced auditing, enabling security teams to assess and incorporate them into enterprise policies early on.

3. Operational Efficiency through Feedback

Insiders are encouraged to report issues, suggest enhancements, and contribute to the design process. Enterprises that participate become co-creators in shaping Windows Server — turning feedback into business-aligned features that improve workflows and infrastructure performance.

4. Skills Development and Training

IT professionals gain first-hand experience with upcoming technologies, enhancing team expertise and preparing staff for smoother transitions during official releases. This becomes a valuable part of enterprise L&D strategies, minimizing learning curves and avoiding costly deployment surprises.

5. Better Long-Term Planning

Access to Insider builds allows enterprises to assess hardware compatibility, benchmark performance, and refine internal tools or scripts, reducing friction during upgrades or cloud migrations.

Real-World Scenario: Testing Hybrid Flexibility

Imagine an enterprise planning a hybrid infrastructure strategy using Azure Arc and on-prem Windows Server. By experimenting with preview builds, they can test hybrid management policies, refine group configurations, and validate security baselines — all without impacting production environments.

How to Get Started

Enrollment is straightforward. Enterprises can sign up using their Microsoft account and download the latest Insider builds from the Windows Server Insider Preview portal.

Final Thoughts

In enterprise tech, innovation waits for no one. The Windows Server Insider Program offers more than just access — it’s a strategic lever for proactive IT leadership. By embracing this program, organizations gain the insight, influence, and preparedness to lead in the evolving digital landscape.

If your enterprise hasn’t joined yet, now might be the best time to get ahead of the curve — because the future of infrastructure isn’t just about adopting change. It’s about helping build it.

Introduction to Windows 11 with Copilot on Microsoft Surface Devices

Welcome to the exciting world of Windows 11, where innovation meets productivity with the combined power of Copilot and Microsoft’s Surface devices. In this blogpost, we’ll explore how Windows 11 enhances the user experience, and how pairing it with Copilot on a Surface Laptop or Surface Pro creates an unmatched synergy that transforms the way you work and play.

Microsoft Copilot + PC for Business

User Interface and Design

Windows 11 introduces a sleek, modern interface with a centered Start menu, rounded corners, and new iconography. The redesigned taskbar, Action Center, and widgets provide a more intuitive and streamlined experience, making navigation a breeze on the stunning high-resolution displays of Surface devices. With the Surface’s touch and pen capabilities, the new themes and wallpapers can be tailored to fit your unique style.

New Features and Improvements

Enhanced Touch and Pen Support

Surface devices are known for their exceptional touch and pen support, making Windows 11’s enhanced touch features even more impactful. Whether you’re using the Surface Pen for precise drawing or multitouch gestures to navigate seamlessly, the combination offers unparalleled interactivity.

Virtual Desktops and Snap Layouts

With Windows 11, organizing your workspace becomes effortless. The introduction of Snap Layouts and Snap Groups allows for better multitasking, perfectly complemented by the Surface’s spacious screen real estate. Virtual desktops let you create customized workspaces for different projects, maximizing productivity on the go.

Improved Gaming Capabilities

Gaming on a Surface Laptop or Surface Pro reaches new heights with Windows 11’s optimized gaming features. From DirectStorage for faster load times to Auto HDR for vibrant visuals, your gaming experience becomes more immersive and enjoyable.

What is the NPU, and how does it enhance performance.

The Neural Processing Unit (NPU) is a newer addition to modern Windows devices and plays a key role in handling tasks related to artificial intelligence (AI) and machine learning. It is designed to speed up complex processes such as facial recognition, voice assistance, and data analysis, which require advanced computation. The NPU’s ability to offload these tasks from the CPU and GPU allows for faster, more efficient operation of the entire system.

Unlocking the power of NPU on Surface: Our “Hello World” journey for DevOps and developers

AI Integration

Copilot – Your AI Companion

Integrating Copilot into Windows 11 on Surface devices brings a new level of intelligence and assistance. Copilot can help you with tasks like setting reminders, generating content, and providing insights. With improved speech recognition and the power of the Surface’s microphones and speakers, interacting with Copilot feels natural and efficient.

Microsoft Office and AI

Windows 11 leverages AI to enhance productivity tools like Microsoft Office. Copilot can offer intelligent suggestions and insights, helping you create polished documents, manage emails, and stay organized, all while utilizing the Surface’s powerful hardware.

Security Enhancements

Security is paramount in Windows 11, with features like Windows Hello, Microsoft Defender, and BitLocker providing robust protection. The new Windows Security Center offers a comprehensive overview of security settings, ensuring your Surface device is always secure. Windows Hello takes full advantage of the Surface’s IR camera for quick and secure logins.

Windows 11 Security

Hyper-V and Virtualization

Windows 11 includes advanced virtualization capabilities through Hyper-V, allowing you to create and manage virtual machines with ease. This feature is particularly useful for developers, IT professionals, and power users who need to run multiple operating systems or isolated environments on their Surface devices.

Windows Subsystem for Linux (WSL)

The Windows Subsystem for Linux (WSL) in Windows 11 provides a seamless way to run Linux distributions natively on your Surface device. WSL offers improved performance, compatibility, and integration with Windows tools, making it an essential feature for developers and tech enthusiasts.

WSL

Performance and Optimization

Windows 11 is designed to deliver improved performance and efficiency, with faster boot times, enhanced battery life, and better resource management. Surface devices leverage hardware advancements to provide a smoother and more responsive experience, ensuring you can work and play without interruptions.

Tips and Tricks

Here are some tips and tricks to help you get the most out of Windows 11 on your Surface device:

• Keyboard Shortcuts: Utilize the Surface’s keyboard shortcuts to navigate quickly and efficiently.
• Customization: Personalize your device with themes, wallpapers, and widgets that reflect your style.
• Pen Shortcuts: Take advantage of Surface Pen shortcuts for quick access to apps and features.
• Battery Optimization: Manage power settings to maximize battery life and keep your Surface running longer.
• Troubleshooting: Use the Windows Security Center and Device Manager to diagnose and fix common issues.
• Become a Windows Insider: Here you can test almost every week a new Windows 11 Insider Preview Build

Conclusion

Windows 11, combined with Copilot on Microsoft Surface devices, represents a significant leap forward in terms of design, functionality, and performance. The innovative features and improvements make it the operating system of choice for users around the world, providing a seamless and powerful experience that enhances every aspect of your digital life.

Here you find more information about Microsoft Windows 11

The New Microsoft Surface Laptop Copilot + PC

Microsoft Windows 11 Free training on MS-Learn

Microsoft Windows 11 Security Book for free

Enjoy your New Microsoft Surface Device with Copilot!
It’s Awesome

Photo of the Day Rick Claus at the Microsoft MVP – RD Wall at MS Ignite 2024

Keynote by CEO Satya Nadella

Love this Windows 365 Link Device (Preview)

The world’s Computer

Microsoft Azure Local announcement

Microsoft Azure Integrated HSM

for Security first

Microsoft Azure Boost DPU Chip

Microsoft adopts NVIDIA Blackwell to power the next frontier of AI supercomputing

Security is a Team Effort

Microsoft Security Exposure Management

Scott Guthrie on Stage with the Most Developer Tools

Microsoft Azure AI Foundry Announcement 

Microsoft SQL Server 2025 Preview Announcement by Scott

Microsoft SQL Overview Slide with Fabric

Jeremy Winter about Azure and staying ahead of evolving threats at every layer

Microsoft Windows Server 2025 Hyper-V

This was my first day impression of Microsoft Ignite 2024 Event, It was Awesome to see and hear all the News!

Here you find the Microsoft Ignite 2024 Book of News

Let’s go for Day 2 of Microsoft Ignite 2024

Downloading Windows Server 2025 Insider Preview Build 26311

Microsoft has recently rolled out the latest Windows Server 2025 Insider Preview Build 26311, and it’s packed with enhancements that promise to elevate your server management experience. Let’s dive into the key features and security improvements that make this build a must-try for IT professionals and enthusiasts alike. Use this in test environment only until Windows Server 2025 is GA

Enhanced Security with Windows Defender Application Control (WDAC)

One of the standout features in this build is the Windows Defender Application Control for Business (WDAC). This software-based security layer significantly reduces the attack surface by enforcing a strict list of permitted software.

• With WDAC, administrators can apply a Microsoft-defined default policy via PowerShell cmdlets, ensuring only trusted applications run on their servers.
• This feature is powered by the OSconfig security configuration platform, which streamlines the process of maintaining a secure server environment.

Windows Server 2025 Security Baseline Preview

Security is further bolstered with the Windows Server 2025 Security Baseline Preview. This feature allows administrators to configure their servers with a recommended security posture right from the start

• With over 350 preconfigured Windows security settings, the Security Baseline Preview helps enforce best practices and industry standards
• This tailored security baseline can be applied to various server roles, including Domain Controllers, Member Servers, and Workgroup Members

Modern Identity Management and SMB Improvements

Windows Server 2025 also introduces modern, scalable identity management capabilities within Active Directory

These enhancements ensure robust security and streamlined management of user identities across the network. Additionally, Server Message Block (SMB) improvements, including SMB over QUIC, provide better protection against brute force attacks, spoofing, and relay attacks.

Feedback and Future Updates

Microsoft encourages users to provide feedback on this build through the new Feedback Hub app, which is now available for Server Desktop users
This app ensures that your insights and experiences help shape future updates and improvements.
You can join the Windows Server Insider Program here 

In conclusion, Windows Server 2025 Insider Preview Build 26311 brings a host of security enhancements and new features designed to provide a secure, efficient, and modern server management experience. Whether you’re an IT professional or a tech enthusiast, this build is worth exploring to stay ahead in the ever-evolving world of server technology.

Here you find what’s New in Microsoft Windows Server 2025 (Preview)

Windows 11 Insider Preview Dev Build Update 26120.1330 in Microsoft Azure WAC.

The Microsoft Windows Insider Program Team released Windows 11 Insider Preview Dev Build Update 26120.1330

JOIN the Windows Insider Program, It’s a community of millions of Windows’ biggest fans who get to preview Windows features. While previewing Windows, Insiders can provide feedback and engage directly with Microsoft engineers to help shape the future of Windows.

Here I manage Windows 11 Insider Build in my MVP LAB with Microsoft Azure Windows Admin Center.

Since June 2024 Microsoft Azure Windows Admin Center supports Windows 10 / 11 in the Cloud.

Update Done via Azure WAC

Installing Docker on Windows Server 2025 Insider Preview Build 26080.1

During the Microsoft Windows Server Summit 2024 I got inspired to run a Windows Server 2025 Insider Preview Build and do something with Microsoft WinGet because this is now default installed on the latest Windows Server 2025 Insider Preview Build.

So with the following command, I installed Docker on the Window Server Insider Preview Build version 26080:

Invoke-WebRequest -UseBasicParsing “https://raw.githubusercontent.com/microsoft/Windows-Containers/Main/helpful_tools/Install-DockerCE/install-docker-ce.ps1” -o install-docker-ce.ps1
.\install-docker-ce.ps1

Docker running on Windows Server 2025 Insider Preview Build.

Here I’m pulling NanoServer Insider 26080 image.

With the following command:

docker pull mcr.microsoft.com/windows/nanoserver/insider:10.0.26080.1

the NanoServer Insider container image is in the repository.

So now is Microsoft Windows Package Manager (WinGet) tool handy on this Windows Server Insider Build, because I like to have Microsoft Visual Studio Code Installed to play with Windows Nano Server Insider Container.

First I did a Winget upgrade –all

with Winget search vscode you get the list
To install Visual Studio Code with Winget:
winget install Microsoft.VisualStudioCode

Visual Studio Code is installing.

Visual Studio Code is Installed.

I installed the Docker extension in VSCode.

Microsoft Windows Nano Server Insider Image version 26080 in VSCode.

Running Nano Server Insider Container on Windows Server 2025 Insider Preview Build.

On the Container host is a virtual Nat adapter 172.24.16.1 for
the containers the gateway.

Important:

This is not for production environment but for testing and learning only with new Microsoft technologies.

More information about running Containers on Windows Servers

Become Microsoft Windows Server Insider

Microsoft Windows Server 2025 Datacenter Insider Preview Build 26040

Microsoft released a new Windows Server Insider preview Build 26040 on January 26th and changed Windows Server vNext name into Microsoft Windows Server 2025!

So time to update my MVPLAB domain stack.local.

I’m updating my domain controller from build 26010 to 26040.

Before we can move further, we have to run adprep.

Run adprep from the new ISO on the Domain controller.
by Typing C and enter it will run.

Schema upgrade from 90 to 91

adprep /domainprep.

Adprep successfully updated.

After this click on refresh in the Windows Server Setup if you have this still open.

I want to keep my files, settings and apps on my domain controller.
Click on Install

Installing Windows Server 2025 Insider Preview Build 26040

Don’t turn off your machine.

Microsoft Windows Server 2025 Datacenter Insider Preview Build 26040
is running as my Domain Controller.

Don’t forget the last updates.

Running Schema object version 91.

Here you can find more information about Windows Server 2025 Insider Preview Build 26040

Follow Jeff Woolsey on X (Twitter) here

Follow Ned Pyle on X (Twitter) here

Get started by joining Windows Server Insider program

Make your Windows Servers Hybrid with Microsoft Azure Arc
for more Hybrid IT management Benefits

Here you can download the Free Windows 11 Security E-book

How Secure are your devices?

Make it more secure by design with Windows 11 and do security assessments / scans for vulnerabilities on your pc’s in your company.
I hope this free E-Book will give you more security insights.

What a Year 2022!!

I like to thank you Community for Supporting, Sharing and Reading New Microsoft technologies on my Blog, Twitter, Facebook and
LinkedIn Community Groups I wish you all happy Holidays, Merry Christmas and a Healthy New Year 2023 may the Best Wishes comes true !

I’m very proud and Honored  on the Microsoft Global MVP Awards 2022-2023 !

• MVP Award for Cloud and Datacenter Management
• MVP Award for Windows Insiders
• MVP Award for Azure Hybrid

Thank you Microsoft Product Groups, MVP Award Program, Windows Insider Team, Azure Hybrid Team, Windows Server and Azure Stack HCI Team for all your support, NDA PGI sessions, and for the Awesome software, Features, solutions you are building
Wish you all Happy Holidays, Merry Christmas and a Healthy New Year 2023 may the Best Wishes comes true !

Here are some Great links for Reading and Sharing :

JOIN these LinkedIn Community Groups for free and Share New Microsoft Technologies Together:

Windows Admin Center Community Group

Containers in the Cloud Community Group

Microsoft Azure Monitor & Security for Hybrid IT Community Group

Azure Hybrid Community Group

Azure DevOps Community Group

What I really love is the Microsoft Tech Community platform

For Microsoft Azure Hybrid:

Azure Arc Jumpstart site

Azure Hybrid and Multi Cloud documentation

Microsoft Azure Arc Community monthly Meetup (GitHub)

Follow on Twitter for Azure Hybrid:

Microsoft Windows Insiders Blog

Windows Insider Team on YouTube

The Windows Insider Program Team is really active on Twitter:
@WindowsInsider

@JenMsft

@NorthFaceHiker

@brandonleblanc

@amanda_lango

Get started with the Windows Server Insider program

What’s New in Windows Server 2022

Overview of Windows Admin Center

What’s New in SQL Server 2022