ubuntu-latest: Failing to run NET6 app due to missing Microsoft.NETCore.App

[gregory-paidis-sonarsource]

Description

After the latest update in ubuntu-latest we started having issues in our Azure pipeline while running a NET6 app with the error:

/usr/share/dotnet/sdk/7.0.101/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.FrameworkReferenceResolution.targets(376,5):
 error NETSDK1127: The targeting pack Microsoft.NETCore.App is not installed. Please restore and try again.

Executing dotnet --list-sdks inside the VM shows:

6.0.404 [/usr/share/dotnet/sdk]
7.0.101 [/usr/share/dotnet/sdk]

Executing dotnet --info inside the VM shows:

========================== Starting Command Output ===========================
/usr/bin/bash --noprofile --norc /home/vsts/work/_temp/039e26df-14cb-44e1-bd8d-5aa83db5ddf9.sh
.NET SDK (reflecting any global.json):
 Version:   6.0.404
 Commit:    be4f3ec411

Runtime Environment:
 OS Name:     ubuntu
 OS Version:  22.04
 OS Platform: Linux
 RID:         ubuntu.22.04-x64
 Base Path:   /usr/share/dotnet/sdk/6.0.404/

Host:
  Version:      7.0.2
  Architecture: x64
  Commit:       d037e070eb

.NET SDKs installed:
  6.0.404 [/usr/share/dotnet/sdk]
  7.0.101 [/usr/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 6.0.12 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 7.0.1 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.12 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 7.0.1 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

Other architectures found:
  None

Environment variables:
  Not set

global.json file:
  /home/vsts/work/1/s/global.json

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

Download .NET:
  https://aka.ms/dotnet/download

This seems oddly similar to this ticket that a teammate of mine made some time ago.

Platforms affected

• Azure DevOps
• GitHub Actions - Standard Runners
• GitHub Actions - Larger Runners

Runner images affected

• Ubuntu 18.04
• Ubuntu 20.04
• Ubuntu 22.04
• macOS 11
• macOS 12
• Windows Server 2019
• Windows Server 2022

Image version and build link

Image: ubuntu-22.04
Version: 20230109.1

Is it regression?

Yes, it worked before commit c82cd67

Expected behavior

Run the App without a runtime error.

Actual behavior

Having an error:

/usr/share/dotnet/sdk/7.0.101/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.Sdk.FrameworkReferenceResolution.targets(376,5):
 error NETSDK1127: The targeting pack Microsoft.NETCore.App is not installed. Please restore and try again.

Repro steps

Could not reproduce this locally.

Changing the image to ubuntu-18.04 seems to solve the issue on the pipeline, at least.

[erik-bershel]

Hey @gregory-paidis-sonarsource!
I'm not sure it is the same situation but according to my little investigation the same method will work for you here. You can use setup-dotnet task or wait untill new image rollout.
More info about reasons you may find here.

[gregory-paidis-sonarsource]

yeah, @erik-bershel , I installed the latest .NET 7 Sdk to latest and got the same issue on Windows as well.
I cannot reproduce it, but if I find a way to, I will open an issue to the .NET repo.

Just leaving this here, to let you know I do not think it is platform(ubuntu)-specific.

[erik-bershel]

@gregory-paidis-sonarsource yes, it is not a really platform specific. It is more about compability of .Net platforms. As it was mentioned in issue sometimes it happens when you installing both of .Net 7 and 6 on the same machine. We'll see how next build would help you. And in case we got new compability bug, not the same I described, we'll think about another possibility to help you with broaken build. It works right now with old Ubuntu image because of process of retirement - no updates, no preinstalled comability issues.

[erik-bershel]

Hey @gregory-paidis-sonarsource!
New Ubuntu images shiped. May I ask you to try it again?

[erik-bershel]

Hi @gregory-paidis-sonarsource, any updates? How it works right now for you?

[gregory-paidis-sonarsource]

Hey @erik-bershel , sorry for the delay. I will try to use the latest image again today.
I will inform you soon if our Linux steps work.

Thanks for asking!

[gregory-paidis-sonarsource]

hey @erik-bershel, it works. Could you share, at a high level, what changed?

Thanks again for the fix!

[erik-bershel]

@gregory-paidis-sonarsource glad to see it. Main change that supposed been fix issue and did it is .NET Core SDK: 7.0.101 -> 7.0.102