Download Windows Pro Insider Preview 21h2 Build 25131 (dev Channel) (x64) Untouched Zip Review

: Downloading Windows ISOs or "zips" from unofficial sources carries a high risk of malware or tampered system files.

: When browsing the web, compatible free Android apps can now be installed via a native Store pop-up experience.

This release was primarily a "bug fix" build, but it coincided with a major update to the (Version 22205.1401.3.0) that introduced several performance enhancements. Microsoft Store Enhancements : : Downloading Windows ISOs or "zips" from unofficial

: The Store app was rebuilt to run natively on ARM64 devices, providing significantly faster and smoother performance.

: Browsing and scrolling through the Store interface is noticeably faster. Microsoft Store Enhancements : : The Store app

: Searching for "defaults" in the Settings app now correctly prioritizes the "Default Apps" page as the top result. Important Considerations for "Untouched" Zips

was released to the Dev Channel on June 2, 2022. While the filename you mentioned references "21H2," Build 25131 is actually part of the Windows 11 development cycle and not Windows 10. Key Updates in Build 25131 : Downloading Windows ISOs or "zips" from unofficial

: The safest way to get preview builds is through the Windows Insider Program or by downloading official ISOs directly from the Microsoft Insider Download Page . Announcing Windows 11 Insider Preview Build 25131