Download Windows Pro Insider Preview 21h2 Build 25131 (dev Channel) (x64) Untouched Zip May 2026

: To prevent data loss, the Store now automatically skips updating any apps that are currently open.

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 :

: Resolved an issue where Explorer would hang when browsing folders containing .mkv files. : To prevent data loss, the Store now

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

: Searching for "defaults" in the Settings app now correctly prioritizes the "Default Apps" page as the top result. Important Considerations for "Untouched" Zips : When browsing the web, compatible free Android

If you are downloading this as an "untouched zip" from a third-party source, keep the following in mind:

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

: 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