If you have internet access and want the fastest installation, use the Windows Package Manager (WinGet) via PowerShell: powershell winget install -e --id Microsoft.UI.Xaml.2.8 Use code with caution. 3. Extracting from NuGet (Manual Method)
💡 Microsoft.UI.Xaml.2.8 is a backbone dependency for modern Windows apps. Always source your files from official Microsoft channels or verified NuGet repositories to ensure system security.
Method 1: The Safest Way (Via Microsoft Store Generation Project)
Once you have downloaded the .appx file using Method 1, you can install it using PowerShell:
There are three primary reasons this framework error occurs on Windows:
If you are side-loading an AppxBundle or Msixbundle package manually without an active internet connection, Windows cannot fetch the Microsoft.UI.Xaml.2.8 dependency from the cloud.
Run the following command, replacing the path with your actual file location: powershell
Look for Microsoft.UI.Xaml.2.8_8.2306.22001.0_x64__8wekyb3d8bbwe.appx 32-bit PCs: Look for the file containing _x86_ in the name.
Windows 10 (Version 1809 / Build 17763 or higher) or Windows 11
IT administrators sideloading enterprise apps via provisioning packages or scripts. Common Error Messages
This indicates that the package you are trying to install requires an older runtime version first, or you downloaded the wrong system architecture. Ensure you are installing the version on 64-bit systems, and check if your app also requires the Microsoft.NET.Native.Runtime package. Error 0x80073D05 (Sideloading is disabled)