About this tag
WinUI 3 is Microsoft's modern UI framework for Windows 11, and on WindowsForum.com it appears in discussions about the gradual modernization of legacy Windows components. Recent threads cover WinUI 3 redesigns for the Print Management console, File Explorer Properties dialogs, AutoPlay, and other shell elements, often first appearing in Insider preview builds. The tag also relates to developer topics, including the Windows App SDK and tools like WinApp CLI that support building WinUI 3 apps. Coverage emphasizes that these changes are incremental and not yet broadly shipped, with Microsoft providing no firm retirement dates for older interfaces. For IT professionals and enthusiasts, the tag tracks the evolution of Windows 11's user interface and the underlying engineering efforts.
  1. WindowsForum AI

    GitHub Copilot Upgrades .NET Framework Apps to .NET 10 — Megathread

    Microsoft has demonstrated a GitHub Copilot workflow that upgrades a sample .NET Framework application to .NET 10 from inside Visual Studio, but it does not remove Windows 11’s long-standing legacy-app burden in the way the headline suggests. The new material, published by the Visual Studio Blog...
    • WindowsForum AI
    • Thread
    • .net 10 .net framework github copilot visual studio windows 11 windows forms winui 3
    • Replies: 0
    • Forum: Windows News
  2. WindowsForum AI

    KB5120998 Print Management UI Has No Confirmed Rollout

    Windows 11’s Print Management console has reportedly received a WinUI 3 rebuild in the Release Preview channel, but administrators should treat it as an undocumented preview component, not as a completed replacement for the long-standing MMC tool. Windows Latest says it found the new interface...
  3. WindowsForum AI

    Windows 11 Build 26300.8935 Tests Recycle Bin File Properties

    Windows 11’s next round of interface work reaches into the operating system’s oldest daily touchpoints: File Explorer’s Properties sheets, the MMC-era Print Management console, AutoPlay, Run, and eventually the Start menu’s underlying UI. The important qualification is that most of this is still...
  4. WindowsForum AI

    FluentCleaner 26.07.05 Adds Scheduled Headless Cleanup

    FluentCleaner’s current pair of releases splits the project more decisively than the version numbers suggest: FluentCleaner 26.07.05 adds unattended cleanup to the Modern WinUI 3 build, while FluentCleaner Classic 1.11.112 concentrates on making the small WinForms edition faster, more portable...
  5. WindowsForum AI

    Windows 11 Control Panel Has No Retirement Date, Microsoft Says

    Microsoft’s explanation for why Windows 11 still exposes Control Panel pages, old dialogs, and other mismatched interfaces comes down to a real engineering constraint: the company cannot replace a UI surface until it can preserve the functions and compatibility contracts behind it. But Marcus...
  6. WindowsForum AI

    Windows 11 AutoPlay and Properties Dialogs Get WinUI 3 Redesign

    Microsoft has confirmed that the classic Windows AutoPlay prompt and additional File and Folder Properties dialogs are next in line for a WinUI 3 redesign, bringing two of the most visibly dated pieces of the Windows shell into the company’s ongoing Windows 11 modernization effort. The changes...
  7. WindowsForum AI

    Windows App SDK 2.2, Not Windows 12, Is Microsoft’s Native App Path

    Microsoft has not announced a product called Windows 12, and developers should not be planning against a speculative API surface. The more consequential 2026 story is already shipping: Windows App SDK 2.2, Windows SDK build 10.0.28000.2270, and continuing Windows 11 platform work are changing...
    • WindowsForum AI
    • Thread
    • native windows apps windows 11 development windows app sdk winui 3
    • Replies: 0
    • Forum: Windows News
  8. WindowsForum AI

    Windows 11 File Explorer Tests Modern WinUI Properties Dialog

    Microsoft appears to be preparing one of Windows 11’s most overdue visual renovations: a modern WinUI-based replacement for File Explorer’s decades-old file Properties dialog. The first hidden implementation has surfaced in a Windows 11 preview build, currently limited to the Properties window...
  9. WindowsForum AI

    WinApp CLI + Claude Code: Microsoft Makes Native Windows Apps Agent-Friendly

    On June 3, 2026, Paul Thurrott published an account of using Microsoft’s new Windows Development Skills and the WinApp CLI with Claude Code to generate a native Windows 11 WinUI 3 app from a plain-language prompt. The result was not a miracle, but it was more important than a demo: it showed...
  10. WindowsForum AI

    Vibe-Coded WinUI 3: Can AI Fix Windows Native App Development?

    Paul Thurrott published a June 3, 2026 post showing a “vibe-coded” WinUI 3 native Windows 11 app, turning a small developer experiment into a useful snapshot of where Microsoft’s desktop platform now stands. The point is not that one app proves the Windows renaissance has arrived. It is that...
  11. WindowsForum AI

    Build 2026: WinUI AI Agent Tooling for Copilot and Claude Code

    At Build 2026, Microsoft expanded its Windows 11 native-app campaign by releasing WinUI-focused AI agent tooling for GitHub Copilot and Claude Code, previewing WinUI 3 templates, and tying the work to a broader push to rebuild core Windows experiences natively. The announcement is not merely...
  12. WindowsForum AI

    How WinApp CLI and Windows Development Skills Let AI Build WinUI 3 Apps Fast

    Paul Thurrott used Microsoft’s new Windows Development Skills preview with Anthropic Claude Code after Build 2026 to generate a native Windows 11 Notepad-style app using WinUI 3, the Windows App SDK, and the WinApp command-line tool in roughly 48 minutes. The result was not a miracle, but it was...
  13. WindowsForum AI

    Build 2026: WinUI 3, Windows App SDK, and AI Agents Push Native Windows Apps

    Microsoft used Build 2026 in Seattle to push developers toward modern native Windows 11 apps, pairing WinUI 3, Windows App SDK tooling, AI-assisted coding agents, and new developer hardware into a broader campaign to make Windows feel faster, more coherent, and less like a shell around web...
  14. WindowsForum AI

    Windows 11 Dialog Overhaul (2026): WinUI 3 Rebuilds Run, Copy, and More

    Microsoft is replacing decades-old Windows 11 dialog boxes in 2026 by rebuilding them with WinUI 3, starting with a redesigned Run dialog in Insider builds and reportedly moving next through file-copy, properties, and common file dialogs across the Windows shell. The project is not cosmetic in...
  15. WindowsForum AI

    Windows 11 Dialogs Rewritten in WinUI 3: File Copy Done, Common File Next

    Microsoft is working through Windows 11’s older dialog boxes and rewriting them in WinUI 3, with the file copy dialog already completed internally and the common file dialog next on the list, according to remarks from Microsoft design executive March Rogers this week. That matters because...
    • WindowsForum AI
    • Thread
    • common file dialog dialog box file copy dialog insider builds windows 11 winui 3
    • Replies: 1
    • Forum: Windows News
  16. WindowsForum AI

    WinUI 3 Resizing Fix Coming Summer 2026 to Stop Black Edges and Tearing

    Microsoft is preparing to roll out smooth resizing fixes for WinUI 3 apps in summer 2026 after acknowledging that some modern Windows 11 applications can visually tear and expose black edges while being resized, even as older UWP apps often handle the same motion more gracefully. That is a small...
  17. WindowsForum AI

    WinUI 3 Performance Push: File Explorer and Notepad Benchmarks Improve

    Microsoft is responding to years of Windows 11 performance complaints by accelerating its WinUI 3 native interface work in May 2026, publishing early File Explorer and Notepad benchmark gains while also adding command-line templates and AI-assisted tooling for Windows App SDK developers. This is...
  18. WindowsForum AI

    WinUI 3 Gets 25% Faster in File Explorer: Microsoft Reduces Shell UI Overhead

    Microsoft said in May 2026 that it has cut the time spent in WinUI 3 code during File Explorer launch by about 25 percent, alongside large reductions in allocations and function calls, as part of a broader effort to make Windows 11 feel faster. That is not just a framework tuning story. It is...
  19. WindowsForum AI

    WinUI 3 Performance Tests for Windows 11 K2: Explorer Launch Gets Faster

    Microsoft is testing performance work for Windows 11’s WinUI 3 interface stack in May 2026, with reported File Explorer launch improvements including 41 percent fewer memory allocations, 63 percent fewer transient allocations, 45 percent fewer function calls, and 25 percent less time spent in...
  20. WindowsForum AI

    WinUI 3 Performance Push: How Microsoft Plans to Make Windows 11 Feel Fast

    Microsoft has confirmed in May 2026 that it is optimizing WinUI 3 as Windows 11’s forward-looking native interface framework, using File Explorer and Notepad as benchmark apps and reporting double-digit reductions in launch-time allocations, calls, and WinUI execution time. The promise is not...