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Debugging intermittent failures in CI/CD pipeline for .NET Core application

👀 Views: 345 💬 Answers: 1 📅 Created: 2025-10-17
azure-devops ci-cd dotnet-core C#

I'm experimenting with I'm integrating two systems and Trying to implement a CI/CD pipeline for our .NET Core application using Azure DevOps, but I've run into some intermittent failures during the build and deployment phases. The builds succeed locally, yet when pushed to the pipeline, I often see errors that seem to stem from dependency resolution issues, particularly with the `Microsoft.EntityFrameworkCore` package. In the Azure DevOps pipeline, I have the following YAML setup: ```yaml trigger: branches: include: - main pool: vmImage: 'windows-latest' steps: - task: DotNetCoreCLI@2 inputs: command: 'restore' projects: '**/*.csproj' - task: DotNetCoreCLI@2 inputs: command: 'build' projects: '**/*.csproj' arguments: '--configuration Release' - task: DotNetCoreCLI@2 inputs: command: 'publish' projects: '**/*.csproj' arguments: '--configuration Release --output $(Build.ArtifactStagingDirectory)' ``` When I check the logs, I see errors like: ``` error NU1202: Package Microsoft.EntityFrameworkCore 5.0.0 is not compatible with netcoreapp3.1 (.NETCoreApp,Version=v3.1) . ``` While these errors are consistent, they seem to occur sporadically. During one of the runs, I even attempted to add a `DotNetCoreCLI@2` task to clean the solution, yet the issues persisted. I’ve also verified that the correct SDK version is specified in the global.json file: ```json { "sdk": { "version": "5.0.400" } } ``` To troubleshoot further, I experimented with explicitly defining the version in the pipeline's build task like so: ```yaml - task: DotNetCoreCLI@2 inputs: command: 'restore' projects: '**/*.csproj' feedsToUse: 'select' vstsFeed: 'your-feed' nuGetFeedType: 'internal' ``` Even after specifying the feed, the same dependency issues arose. I'm trying to pinpoint whether the build agent doesn't have the latest SDK or if there's a caching problem in Azure DevOps. Any insights into how to debug these intermittent CI/CD failures effectively or best practices for ensuring stable dependency management in a .NET Core CI/CD pipeline would be greatly appreciated. I appreciate any insights! Any pointers in the right direction?