!new! | Microsoft.ui.xaml.2.8 Appx Download

1. What Exactly Is Microsoft.UI.Xaml.2.8.appx?

This file is the Framework Package for the Windows UI Library (WinUI) 2.x, specifically version 2.8. WinUI 2 is a native UX framework for Windows desktop and UWP apps that extends the platform's default XAML controls with modern, Fluent Design controls.

Method 2: PowerShell (For silent or remote installation)

This is the preferred method for IT admins deploying to many machines.

Open PowerShell as Administrator and run: microsoft.ui.xaml.2.8 appx download

Add-AppxPackage -Path "C:\Downloads\Microsoft.UI.Xaml.2.8.appxbundle"

To force a system-wide installation (for all users):

Add-AppxProvisionedPackage -Online -PackagePath "C:\Downloads\Microsoft.UI.Xaml.2.8.appxbundle" -SkipLicense

Q2: Is Microsoft.UI.Xaml.2.8 the same as WinUI 3?

A: Yes. Microsoft.UI.Xaml 2.8 is part of the WinUI 3 family. Versions 2.0 through 2.8 are considered stable WinUI 3 releases. To force a system-wide installation (for all users):

5.2 PowerShell (Add-AppxPackage) – Recommended for scripting

Open PowerShell as Administrator:

# Install for current user
Add-AppxPackage -Path "C:\Downloads\Microsoft.UI.Xaml.2.8_8.2208.13001.0_x64__8wekyb3d8bbwe.appx"
5.4 Intune / SCCM

Package the .appx as a Line-of-Business (LOB) app.
Deployment action: Install.
Requirement rule: OS version ≥ 10.0.17763.

Using PowerShell:
Get-AppxPackage -Name Microsoft.UI.Xaml.2.8

Expected output includes the full package name, version, and architecture. Q2: Is Microsoft
Problem 1: "This package requires Windows 10 version 17763 or later"

Fix: Update Windows or target lower version in your app manifest.

Why Do You Need Microsoft.UI.Xaml.2.8?
Unlike classic desktop applications (Win32) that bundle all dependencies inside their installer, many modern Windows apps (including those from the Microsoft Store, and packaged desktop apps) rely on framework packages. These are shared components installed at the system level.
Common applications that depend on Microsoft.UI.Xaml.2.8 include:

The new Outlook for Windows
Microsoft Teams (new version)
Windows Photos (modern version)
Third-party WinUI 3 apps
Internal corporate applications developed with .NET and WinUI

Without the correct framework version installed, these applications will either fail to launch, crash immediately, or display a dialog asking you to install a missing dependency.
Key characteristics of version 2.8:

Supports Windows 10 version 1809 (build 17763) and later, plus Windows 11
Includes improved theming, window management, and input controls
Backward compatible with apps built for 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, and 2.7


3.1 Microsoft Store (Recommended for most users)

The framework is listed as “Microsoft.UI.Xaml.2.8” in the Microsoft Store.
It is automatically installed when an app requires it.
Manual store link: ms-windows-store://pdp/?ProductId=9P8TPZRBB7GN (Launch via browser or Run dialog).