Bug in dotnet try command ( red area when executing code )

Describe the bug

I’m trying to execute dotnet try to try code samples of this repo but when I’m try run the code, I got this red area without any message.

What can I do in this case???

I really need help to fix this problem because I’m following a Linkedin course that use this tool .

dotnet --version 5.0.203

dotnet --list-sdks 2.1.524 [C:\Program Files\dotnet\sdk] 2.1.700-preview-009618 [C:\Program Files\dotnet\sdk] 3.1.200 [C:\Program Files\dotnet\sdk] 3.1.409 [C:\Program Files\dotnet\sdk] 5.0.203 [C:\Program Files\dotnet\sdk]

dotnet --info SDK .NET (reflétant tous les fichiers global.json) : Version: 5.0.203 Commit: 38xxxx Environnement d’exécution : OS Name: Windows OS Version: 10.0 OS Platform: Windows RID: win10-x64 Base Path: C:\Program Files\dotnet\sdk\5.0.203\

Host (useful for support): Version: 5.0.6 Commit: 478b2f8c0e

.NET SDKs installed: 2.1.524 [C:\Program Files\dotnet\sdk] 2.1.700-preview-009618 [C:\Program Files\dotnet\sdk] 3.1.200 [C:\Program Files\dotnet\sdk] 3.1.409 [C:\Program Files\dotnet\sdk] 5.0.203 [C:\Program Files\dotnet\sdk]

.NET runtimes installed: Microsoft.AspNetCore.All 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.16 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.24 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.All 2.1.28 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.All] Microsoft.AspNetCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.16 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.24 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 2.1.28 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.2 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 3.1.15 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.AspNetCore.App 5.0.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App] Microsoft.NETCore.App 2.1.9 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.16 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 2.1.28 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.2 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 3.1.15 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.NETCore.App 5.0.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App] Microsoft.WindowsDesktop.App 3.1.2 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 3.1.15 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App] Microsoft.WindowsDesktop.App 5.0.6 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Did this error occur while using dotnet try or online?

• dotnet-try
• online

What kind of error was it?

• User Interface (UI): For example the output never displayed
• Service Error: For example “The service is temporarily unavailable. We are working on it”
• Other:

Screenshots

Please complete the following:

• OS
  • Windows 10
  • macOS
  • Linux (Please specify distro)
  • iOS
  • Android
• Browser
  • Chrome
  • Edge
  • Safari

Update: I saw that the problem come from Kaspersky Antivirus, so when I disable the antivirus, the error is gone. But this is not a good solution , I would like to know how can I add an except for the localhost??

[MaartenGDev]

global.json can be used to fix the log version error.

I used the following steps to fix the “Unsupported log format error”:

1. Install preview version of dotnet try (source: https://github.com/dotnet/try/blob/main/DotNetTryLocal.md)

dotnet tool install -g --add-source "https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json" Microsoft.dotnet-try

1. Clone sample repo

git clone https://github.com/dotnet/try-samples.git
cd try-samples

1. Create global.json inside the try-samples folder

touch global.json

1. Place the following contents in global.json in the try-samples folder. Use the latest .NET 3.1 that you have installed (dotnet --list-sdks)

{
  "sdk": {
    "version": "3.1.416"
  }
}

1. Run dotnet try in the try-samples folder:

dotnet try

The internal server errors should be fixed. Run dotnet try verify if any other error occurs.

[jonsequitur]

Yup, this looks like it’s due to a change in the log format for MSBuild. We’ll look into whether we can support multiple versions and/or roll forward to .NET 5.