Install the .appx on the target machine (admin or sideload enabled)
If the double-click method fails, use PowerShell to force the installation: PowerShell as Administrator.
Depending on your system architecture, use one of the following direct links from the official repository: Microsoft.UI.Xaml.2.8.x64.appx x86 (32-bit): Microsoft.UI.Xaml.2.8.x86.appx Arm64: Microsoft.UI.Xaml.2.8.arm64.appx How to Install Download the appropriate file for your PC. Open PowerShell as an Administrator. microsoft.ui.xaml.2.8 appx download
Note: Microsoft no longer releases new 2.8.x updates. The final version is 8.2208.13001.0.
The Microsoft Store failed to automatically fetch the background dependencies required by your new app. Install the
You encounter error codes like 0x80073CF3 (missing dependency) when sideloading an app.
| Scenario | Recommendation | |----------|----------------| | Offline build server | ✅ Download from NuGet, extract APPX | | Air-gapped enterprise deployment | ✅ Use DISM + dependency APPXs | | Individual developer on Windows 11 | ❌ Use NuGet or let Store auto-install | | Creating a custom MSIX bundle | ✅ Bundle the APPX as a framework dependency | Note: Microsoft no longer releases new 2
Elias exhaled, a long, shaky breath. He clicked the "Generate Route" button. The map rendered instantly. The dependency had linked arms with his code, and the system was whole.
If a direct APPX link isn't available for the specific version you need, you can extract it from the official NuGet.org package :