The file "windows 10 pro rs4 v180317134191 enus x64 july2018 v3 prea 64 bit" is an unauthorized, pirated copy of Windows 10 Pro intended to allow users to use the OS without purchasing a license. While it contains the legitimate features of the April 2018 Update (patched to July 2018), it carries the inherent risks of using modified software and is currently an obsolete and unsupported version of Windows.
This specific keyword refers to an ISO image for Windows 10 Pro, specifically the April 2018 Update (Version 1803) with the July 2018 cumulative security patches included.
The string breaks down into several key technical identifiers:
RS4 (Redstone 4): The development codename for the Windows 10 Version 1803 update.
v1803: The official version number for the April 2018 Update.
17134.191: The specific OS build number reached after installing the KB4340917 cumulative update released on July 24, 2018. en-US: Indicates the English (United States) language pack. x64 / 64-bit: Designed for 64-bit processor architectures.
July 2018: The month and year the included updates were integrated into this specific version.
v3: Likely denotes the third revision of this unofficial integrated installer.
PreA (Pre-Activated): A term commonly used in unofficial releases where the operating system has been modified to bypass or automatically handle activation during installation. Key Features of Windows 10 Version 1803 The file "windows 10 pro rs4 v180317134191 enus
As a major feature release, Version 1803 introduced several significant improvements to the Windows ecosystem:
Windows Timeline: This feature allows users to view a list of recently used documents, applications, and websites, enabling them to "go back in time" and resume activities from up to 30 days prior.
Focus Assist: An evolution of "Quiet Hours," this tool lets users minimize distractions by blocking notifications during specific times or while playing games and using full-screen apps.
Nearby Sharing: This allows for the quick wireless transfer of files and links between nearby PCs using Bluetooth or Wi-Fi.
Microsoft Edge Improvements: This version brought a refreshed look to the Edge browser, including a new reading view and improved PDF handling. Important Support and Security Note
While Version 1803 was a cornerstone update, it is important to note its current status: How to identify your Windows 10 version - Lenovo Support
The technical string you provided refers to a specific distribution of Windows 10 Pro (April 2018 Update), also known by its development codename Redstone 4 (RS4) Core Specifications 1803 (April 2018 Update). (This corresponds to cumulative update , released on July 24, 2018 Architecture: x64 (64-bit). en-US (English - United States). Pro (Professional). Version & Build Analysis
This particular build was a "quality improvement" update that addressed several enterprise and system issues. Key fixes included: Management Fixes: Resolved issues where devices unexpectedly unenrolled from Microsoft Intune or other MDM services. System Performance: Addressed a memory leak in DNS Response Rate Limiting and fixed issues with OpenType fonts not printing in some applications. Connectivity: What's New:
Fixed Bluetooth peripheral issues related to Quality of Service (QoS) parameters. Contextual Keywords
Likely denotes the third revision of this specific installer package by its creator. Typically stands for "Pre-Activated,"
meaning the installer has been modified to bypass standard Microsoft activation prompts during setup. Redstone 4 , the internal codename for version 1803. Important Safety & Support Information KB4340917 (OS Build 17134.191) KB4340917 (OS Build 17134.191) - Microsoft Support. Microsoft Support Windows 10 - release information - Microsoft Learn
Title: Windows 10 Pro RS4 v1803.17134.191 EN-US x64 July2018 v3 PreA 64-bit: A Comprehensive Overview
Introduction: The Windows 10 Pro RS4 v1803.17134.191 EN-US x64 July2018 v3 PreA 64-bit is a popular release of the Windows 10 operating system. This version, also known as the April 2018 Update, was officially released in April 2018 and has since become a widely used variant of Windows 10. In this post, we'll take a closer look at the features, improvements, and changes in this version.
Key Features:
What's New:
System Requirements:
Installation and Activation:
Conclusion: The Windows 10 Pro RS4 v1803.17134.191 EN-US x64 July2018 v3 PreA 64-bit is a reliable and feature-rich version of the Windows 10 operating system. With its improved design, enhanced security features, and better gaming performance, it's a great option for users looking for a stable and efficient OS.
Disclaimer: Please note that this post is for informational purposes only. It's recommended to obtain Windows 10 from official sources to ensure authenticity and support.
Redstone 4 was the second feature update for Windows 10 in 2018, officially called the April 2018 Update (version 1803). It introduced:
Microsoft ended support for Windows 10 version 1803 on November 12, 2019 (Home/Pro). Using it today means:
Pre-activated ISOs often include:
If you need Windows 10 Pro for a legacy system (e.g., older hardware), follow these official channels:
| Method | Description |
|--------|-------------|
| Microsoft Media Creation Tool | Downloads latest Windows 10 version (22H2 as of 2025). Supports clean install or upgrade. |
| Official ISO from Microsoft | Visit microsoft.com/en-us/software-download/windows10 – still available for 10 Pro. |
| Volume Licensing (VLSC) | For businesses requiring older builds. | System Requirements:
Note: Installing an older build (like RS4) via official media is possible, but Microsoft will immediately try to update it to the latest supported version (22H2) unless you block updates completely – which is highly insecure.