Windows 10 Insider Preview Build 21390 X86 X64 Iso Incl ((install)) Jun 2026

Fixed a svchost.exe crash related to cdp.dll that caused issues for some Insiders.

Build 21390 featured one of the final appearances of Live Tiles on the Start Menu before they were permanently retired in subsequent iterations. Understanding the x86 and x64 ISOs

For standard, stable use, download the official installation media directly from the Microsoft Software Download page. Could you tell me a bit more about your project?

Developers use it to test app compatibility with new icons and the updated Windows Terminal default setting. windows 10 insider preview build 21390 x86 x64 iso incl

Fixed a bug where the taskbar would occasionally stop responding when changing display resolutions.

represents a fascinating historical milestone in the evolution of Microsoft’s operating systems . Released to the Dev Channel on May 26, 2021 , this specific build serves as the final standalone preview bridging the gap between traditional Windows 10 architecture and the modern design elements that would eventually shape Windows 11. For developers, tech enthusiasts, and collectors maintaining older infrastructure, finding an original x86 or x64 ISO including cumulative updates offers a direct window into the development of the "Sun Valley" design era.

| Issue | Solution | | :--- | :--- | | Windows Update stuck checking for updates | The build is expired. Disable Windows Update service. | | Store apps won't download | Microsoft's Store backend no longer supports this old Insider branch. Use offline installers (e.g., winget via command line). | | Dark Mode toggle missing | Re-enable via Registry: HKCU\Software\Microsoft\Windows\CurrentVersion\Themes . Set AppsUseLightTheme to 0. | | Windows Security shows "Unknown" status | Run sc start WinDefend as Admin, then restart. | Fixed a svchost

: Released to the Dev Channel on May 26, 2021 .

Features a modernized, Fluent Design-inspired look that aligns with contemporary Windows aesthetics.

Microsoft released Windows 10 Insider Preview Build 21390 to the Dev Channel as part of the Co-Release (co_release) branch. This build represents a refined step in the evolution of the Windows 10 operating system, introducing updated visual elements, security enhancements, and performance optimizations. Could you tell me a bit more about your project

Resolved issues with blurry taskbar text, svchost.exe crashes, and dark mode text visibility in File Explorer. ISO Availability & Architecture

To truly understand the significance of Build 21390, one must look at the broader context of Windows development during this period. In early 2021, Microsoft was in a transitional phase. The company had canceled Windows 10X, its ambitious dual-screen operating system, and was redirecting its resources toward a major visual overhaul of Windows 10 codenamed —which would ultimately become Windows 11.