BlazorApp Launch Configuration is missing

### URL

https://dotnet.microsoft.com/en-us/learn/aspnet/blazor-tutorial/intro

### Operating system

windows

### More information about your system

PS C:\Projects\Blazor> dir -r

Directory: C:\Projects\Blazor

Mode LastWriteTime Length Name
---- ------------- ------ ----
d----- 3/7/2026 8:55 PM .vscode
d----- 3/7/2026 8:42 PM BlazorApp
-a---- 3/7/2026 8:42 PM 25 Blazor.slnx

Directory: C:\Projects\Blazor\.vscode

Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 3/7/2026 8:55 PM 259 launch.json

Directory: C:\Projects\Blazor\BlazorApp

Mode LastWriteTime Length Name
---- ------------- ------ ----
d----- 3/7/2026 8:42 PM Components
d----- 3/7/2026 8:42 PM Properties
d----- 3/7/2026 8:42 PM wwwroot
-a---- 3/7/2026 8:42 PM 127 appsettings.Development.json
-a---- 3/7/2026 8:42 PM 151 appsettings.json
-a---- 3/7/2026 8:42 PM 309 BlazorApp.csproj
-a---- 3/7/2026 8:42 PM 790 Program.cs

Directory: C:\Projects\Blazor\BlazorApp\Components

Mode LastWriteTime Length Name
---- ------------- ------ ----
d----- 3/7/2026 8:42 PM Layout
d----- 3/7/2026 8:42 PM Pages
-a---- 3/7/2026 8:42 PM 667 App.razor
-a---- 3/7/2026 8:42 PM 300 Routes.razor
-a---- 3/7/2026 8:42 PM 426 _Imports.razor

Directory: C:\Projects\Blazor\BlazorApp\Components\Layout

Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 3/7/2026 8:42 PM 547 MainLayout.razor
-a---- 3/7/2026 8:42 PM 1940 MainLayout.razor.css
-a---- 3/7/2026 8:42 PM 1088 NavMenu.razor
-a---- 3/7/2026 8:42 PM 3418 NavMenu.razor.css
-a---- 3/7/2026 8:42 PM 1362 ReconnectModal.razor
-a---- 3/7/2026 8:42 PM 3873 ReconnectModal.razor.css
-a---- 3/7/2026 8:42 PM 2448 ReconnectModal.razor.js

Directory: C:\Projects\Blazor\BlazorApp\Components\Pages

Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 3/7/2026 8:42 PM 363 Counter.razor
-a---- 3/7/2026 8:42 PM 1215 Error.razor
-a---- 3/7/2026 8:42 PM 99 Home.razor
-a---- 3/7/2026 8:42 PM 126 NotFound.razor
-a---- 3/7/2026 8:42 PM 1922 Weather.razor

Directory: C:\Projects\Blazor\BlazorApp\Properties

Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 3/7/2026 8:42 PM 681 launchSettings.json

Directory: C:\Projects\Blazor\BlazorApp\wwwroot

Mode LastWriteTime Length Name
---- ------------- ------ ----
d----- 3/7/2026 8:42 PM lib
-a---- 3/7/2026 8:42 PM 2900 app.css
-a---- 3/7/2026 8:42 PM 1148 favicon.png

Directory: C:\Projects\Blazor\BlazorApp\wwwroot\lib

Mode LastWriteTime Length Name
---- ------------- ------ ----
d----- 3/7/2026 8:42 PM bootstrap

Directory: C:\Projects\Blazor\BlazorApp\wwwroot\lib\bootstrap

Mode LastWriteTime Length Name
---- ------------- ------ ----
d----- 3/7/2026 8:42 PM dist

Directory: C:\Projects\Blazor\BlazorApp\wwwroot\lib\bootstrap\dist

Mode LastWriteTime Length Name
---- ------------- ------ ----
d----- 3/7/2026 8:42 PM css
d----- 3/7/2026 8:42 PM js

Directory: C:\Projects\Blazor\BlazorApp\wwwroot\lib\bootstrap\dist\css

Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 3/7/2026 8:42 PM 70329 bootstrap-grid.css
-a---- 3/7/2026 8:42 PM 203221 bootstrap-grid.css.map
-a---- 3/7/2026 8:42 PM 51795 bootstrap-grid.min.css
-a---- 3/7/2026 8:42 PM 115986 bootstrap-grid.min.css.map
-a---- 3/7/2026 8:42 PM 70403 bootstrap-grid.rtl.css
-a---- 3/7/2026 8:42 PM 203225 bootstrap-grid.rtl.css.map
-a---- 3/7/2026 8:42 PM 51870 bootstrap-grid.rtl.min.css
-a---- 3/7/2026 8:42 PM 116063 bootstrap-grid.rtl.min.css.map
-a---- 3/7/2026 8:42 PM 12065 bootstrap-reboot.css
-a---- 3/7/2026 8:42 PM 129371 bootstrap-reboot.css.map
-a---- 3/7/2026 8:42 PM 10126 bootstrap-reboot.min.css
-a---- 3/7/2026 8:42 PM 51369 bootstrap-reboot.min.css.map
-a---- 3/7/2026 8:42 PM 12058 bootstrap-reboot.rtl.css
-a---- 3/7/2026 8:42 PM 129386 bootstrap-reboot.rtl.css.map
-a---- 3/7/2026 8:42 PM 10198 bootstrap-reboot.rtl.min.css
-a---- 3/7/2026 8:42 PM 63943 bootstrap-reboot.rtl.min.css.map
-a---- 3/7/2026 8:42 PM 107823 bootstrap-utilities.css
-a---- 3/7/2026 8:42 PM 267535 bootstrap-utilities.css.map
-a---- 3/7/2026 8:42 PM 85352 bootstrap-utilities.min.css
-a---- 3/7/2026 8:42 PM 180381 bootstrap-utilities.min.css.map
-a---- 3/7/2026 8:42 PM 107691 bootstrap-utilities.rtl.css
-a---- 3/7/2026 8:42 PM 267476 bootstrap-utilities.rtl.css.map
-a---- 3/7/2026 8:42 PM 85281 bootstrap-utilities.rtl.min.css
-a---- 3/7/2026 8:42 PM 180217 bootstrap-utilities.rtl.min.css.map
-a---- 3/7/2026 8:42 PM 281046 bootstrap.css
-a---- 3/7/2026 8:42 PM 679755 bootstrap.css.map
-a---- 3/7/2026 8:42 PM 232803 bootstrap.min.css
-a---- 3/7/2026 8:42 PM 589892 bootstrap.min.css.map
-a---- 3/7/2026 8:42 PM 280259 bootstrap.rtl.css
-a---- 3/7/2026 8:42 PM 679615 bootstrap.rtl.css.map
-a---- 3/7/2026 8:42 PM 232911 bootstrap.rtl.min.css
-a---- 3/7/2026 8:42 PM 589087 bootstrap.rtl.min.css.map

Directory: C:\Projects\Blazor\BlazorApp\wwwroot\lib\bootstrap\dist\js

Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 3/7/2026 8:42 PM 207819 bootstrap.bundle.js
-a---- 3/7/2026 8:42 PM 444579 bootstrap.bundle.js.map
-a---- 3/7/2026 8:42 PM 80721 bootstrap.bundle.min.js
-a---- 3/7/2026 8:42 PM 332090 bootstrap.bundle.min.js.map
-a---- 3/7/2026 8:42 PM 135829 bootstrap.esm.js
-a---- 3/7/2026 8:42 PM 305438 bootstrap.esm.js.map
-a---- 3/7/2026 8:42 PM 73935 bootstrap.esm.min.js
-a---- 3/7/2026 8:42 PM 222455 bootstrap.esm.min.js.map
-a---- 3/7/2026 8:42 PM 145401 bootstrap.js
-a---- 3/7/2026 8:42 PM 306606 bootstrap.js.map
-a---- 3/7/2026 8:42 PM 60635 bootstrap.min.js
-a---- 3/7/2026 8:42 PM 220561 bootstrap.min.js.map

PS C:\Projects\Blazor>

### Description

While trying to debug the BlazorApp.
The only available launch configuration is C#: Debug Active File

### dotnet --info

PS C:\Projects\Blazor> dotnet --info
.NET SDK:
Version: 10.0.103
Commit: c2435c3e0f
Workload version: 10.0.100-manifests.a62d7899
MSBuild version: 18.0.11+c2435c3e0

Runtime Environment:
OS Name: Windows
OS Version: 10.0.26200
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\10.0.103\

.NET workloads installed:
There are no installed workloads to display.
Configured to use workload sets when installing new manifests.
No workload sets are installed. Run "dotnet workload restore" to install a workload set.

Host:
Version: 10.0.3
Architecture: x64
Commit: c2435c3e0f

.NET SDKs installed:
9.0.311 [C:\Program Files\dotnet\sdk]
10.0.103 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.7 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 7.0.20 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.24 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 9.0.13 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 10.0.3 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.20 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.33 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.7 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 7.0.20 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.11 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.24 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 9.0.13 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 10.0.3 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 6.0.33 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 6.0.36 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 7.0.7 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 7.0.20 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.11 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.24 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 9.0.13 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 10.0.3 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
Not set

global.json file:
Not found

Learn more:
https://aka.ms/dotnet/info

Download .NET:
https://aka.ms/dotnet/download
PS C:\Projects\Blazor>