Windows 10 Insider Preview Build 21390 X86 X64 Iso Incl May 2026

Users could set Windows Terminal Preview (version 1.9 or higher) as the default terminal emulator for the first time. This allowed Command Prompt and PowerShell to open directly within the modern Terminal interface.

Several fixes addressed visibility issues, specifically making text readable in the File Explorer search box when using dark theme. Why This Build Is Unique windows 10 insider preview build 21390 x86 x64 iso incl

This build introduced new, modern icons for the Task Manager and MSI installers . These icons swapped out older skeuomorphic designs for the sleeker Fluent Design language that was a precursor to Windows 11. Users could set Windows Terminal Preview (version 1