Question :`Microsoft.ui.xaml.dll` is unable to load

I am getting an exception in my WinUI3 app that Microsoft.ui.xaml.dll is unable to load. I have included Microsoft.UI.Xaml and Microsoft.Graphics.Win2D in nuget.

System.DllNotFoundException
  HResult=0x80131524
  Message=Unable to load DLL 'Microsoft.ui.xaml.dll' or one of its dependencies: The specified module could not be found. (0x8007007E)
  Source=TibraUI
  StackTrace:
   at TibraUI.Program.XamlCheckProcessRequirements()
   at TibraUI.Program.Main(String[] args) in C:\Users\Bryan\src\tibra\Tibra\TibraUI\obj\x64\Debug\net6.0-windows10.0.19041.0\win10-x64\App.g.i.cs:line 28

Windows Version 21H1 Build 19043.1348

My App.xaml

<Application
    x:Class="TibraUI.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:TibraUI">
    <Application.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <XamlControlsResources xmlns="using:Microsoft.UI.Xaml.Controls" />
                <!-- Other merged dictionaries here -->
            </ResourceDictionary.MergedDictionaries>
            <!-- Other app resources here -->
        </ResourceDictionary>
    </Application.Resources>
</Application>

[runceel]

I faced same issue. In my case, root cause was launchSettings.json.

When I had faced this issue the file was:

{
  "profiles": {
    "Project Name": {
      "commandName": "Project"
    },
    "WSL": {
      "commandName": "WSL2",
      "environmentVariables": {},
      "distributionName": ""
    }
  }
}

I changed the file to fix this issue to:

{
  "profiles": {
    "Project Name (Package)": {
      "commandName": "MsixPackage"
    },
    "Project Name (Unpackaged)": {
      "commandName": "Project"
    }
  }
}

launchSettings.json was ignored by .gitignore. I cloned my WinUI 3.0 project from a git repository. Then Visual Studio generated default launchSettings.json. It didn’t work for WinUI 3.0 project. So I had to change it myself to fix this error.

[msftbot[bot]]

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