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

: Insider builds are time-limited. Older builds like 25131 from 2022 will likely have expired , meaning they may refuse to boot or will reboot frequently.

: The Store app was rebuilt to run natively on ARM64 devices, providing significantly faster and smoother performance. : Insider builds are time-limited

: Fixed a bug where searching for specific system folders like %appdata% would display a blank icon. : Insider builds are time-limited

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 : Insider builds are time-limited