Windows Server 2025.26100.1742-oemret-x64fre-en...

| Version | Latest Build (Example) | Support End | |---------|----------------------|--------------| | Windows Server 2022 | 20348.xxxx | October 2031 | | Windows Server 2019 | 17763.xxxx | January 2029 | | Windows Server (Annual Channel) | 25xx previews | Varies |

Microsoft has been hard at work on the latest version of its server operating system, and we're excited to share some details about Windows Server 2025. Specifically, we're looking at build 26100.1742-OEMRET-x64FRE-en, which has been making the rounds in the tech community. In this post, we'll break down what we know so far about this upcoming release.

Windows Server 2025.26100.1742-OEMRET-x64FRE-en: A New Era for Hybrid Cloud and Security

This is the most specific technical data point:

AD has received its biggest upgrade in years with a new 32k database page size (up from 8k). This allows for much larger objects and better performance in complex environments.

: The core base build number. Build 26100 represents the foundational codebase shared with Windows 11 Version 24H2, while .1742 denotes the specific integration level containing the September 2024 cumulative update (KB5043080) .

. "Free" is a developer term meaning the retail/production version (as opposed to "Checked" versions used for debugging). en-us English (United States) language pack. ✨ Key Features in Windows Server 2025

This release bridges on-premises infrastructure with modern hybrid cloud workloads. It serves as a secure, high-performance platform for enterprise virtualization, modern identity management, and AI-ready compute power. Decoding the ISO Naming Convention

Instead, pursue official evaluation copies, join the Insider program, or migrate to a proven open-source server OS. Protecting your infrastructure begins with using trustworthy, signed, and supported software.

: Features a refreshed UI consistent with Windows 11, including a modern Task Manager , Windows Terminal , and native support for Wi-Fi and Bluetooth (though these must be manually enabled via services). Build Summary Windows Server 2025 | Microsoft Evaluation Center

A widely reported issue involved servers with high numbers of logical processors. Users experienced slow boot times (taking three hours or more), Blue Screens of Death (BSOD), and installation failures. Microsoft confirmed that servers with were particularly susceptible to these problems. The recommended workaround was to restrict the CPU count in the UEFI settings to below 256 until a permanent fix was released. Fortunately, Microsoft has since resolved these high-core count issues in subsequent security updates.

Peripheral Detected: External Array (Arrival Predicted: 14:02).

: Modifies default structural database locks to leverage multi-threaded CPU architectures more effectively.