Restore task is failing in the container agent

Question

I am seeing following error ##[error]Error: The process 'C:\Program Files\dotnet\dotnet.exe' failed with exit code 1

Answer 1

Hi tarun k

As we discussed in private message,

The errors seem like

error NU1101: Unable to find package Microsoft.VisualStudio.Web.CodeGeneration.Design.

error NU1102: Found 100 version(s) in Artifactory [ Nearest version: ... ]

This usually points to missing or misconfigured NuGet sources.

If you are using template-based restore (e.g., netcore-nuget-restore.yml)

Update the DotNetCoreCLI@2 step to explicitly pass the path to the nuget.config, ensuring the path exists inside the container:

- task: DotNetCoreCLI@2
  displayName: 'Restore Dependencies'
  inputs:
    command: 'restore'
    projects: '**/*.csproj'
    restoreArguments: '--no-cache --configfile $(Build.SourcesDirectory)/nuget.config'

Then, in the preceding step, ensure the secure file is copied to that location:

- task: PowerShell@2
  displayName: 'Copy nuget.config'
  inputs:
    targetType: 'inline'
    script: |
      Copy-Item "$(nuget.secureFilePath)" "$(Build.SourcesDirectory)\nuget.config"

Alternatively, you can Mount nuget.config into the container using a script task

Update your container job to copy the nuget.config into the source folder - main pipeline file that the container sees.

jobs:
- job: TestWithDotNetSdkImage
  displayName: 'Run dotnet test in official SDK image'
  container:
    image: mcr.microsoft.com/dotnet/sdk:8.0
  steps:
    - checkout: self
    # 1. Download nuget.config from Secure Files
    - task: DownloadSecureFile@1
      name: nuget
      displayName: 'Download nuget.config'
      inputs:
        secureFile: 'nuget.config'  # This should match the name in Library > Secure files
    # 2. Copy nuget.config into working directory seen by container
    - script: |
        cp "$(nuget.secureFilePath)" "$(Build.SourcesDirectory)/nuget.config"
      displayName: 'Copy nuget.config to container-accessible location'
    # 3. Optional: Print file structure for debug
    - script: tree $(Build.SourcesDirectory)
      displayName: 'Print file tree'
    # 4. Restore using nuget.config
    - script: |
        dotnet restore source/R2T2CoreTests/R2T2CoreTests.csproj --configfile $(Build.SourcesDirectory)/nuget.config
      displayName: 'Restore Dependencies'
    # 5. Test
    - script: |
        dotnet test source/R2T2CoreTests/R2T2CoreTests.csproj --configuration Release
      displayName: 'Run dotnet test'

Hope this helps!

Please Let me know if you have any queries.

Answer 2

After disabling nuget.org in nuget config file it worked