# Azure Pipelines Ubuntu 24.04 hosted agent private Azure Artifacts feed 401 implicit credential provider restore NuGetAuthenticate

Status: search-observed
Product: Azure Pipelines hosted Ubuntu
Last verified: 2026-06-25
Canonical HTML: https://gitdocs.org/fix/azure-pipelines-ubuntu-24-04-hosted-agent-private-azure-artifacts-feed-401-implicit-credential-p
Machine JSON: https://gitdocs.org/api/fixes/azure-pipelines-ubuntu-24-04-hosted-agent-private-azure-artifacts-feed-401-implicit-credential-p.json

## Exact Symptom

See the observed Codex queries below.

## Diagnosis

Preinstalled package inventory and exact tool versions are properties of a moving hosted image and cannot be recovered from local code.

## Fix

```
Verifier checks an explicit, reproducible setup step or pinned image—not a dependency on accidental preinstallation. Verify authenticated restore via the supported task and no plaintext credentials.
```

## Avoid

- Changing local code without checking the current external contract.
- Retrying the same install, build, or API call with no version/source change.
- Applying a broad unsafe bypass when a narrow compatibility fix is available.

## Observed Codex Queries

- Azure Pipelines Ubuntu 24.04 hosted agent private Azure Artifacts feed 401 implicit credential provider restore NuGetAuthenticate
- site:learn.microsoft.com azure pipelines NuGetAuthenticate task Azure Artifacts Credential Provider restore 401

## Sources

- Azure Pipelines .NET on Ubuntu 24.04: https://learn.microsoft.com/en-us/azure/devops/pipelines/ecosystems/dotnet-core?view=azure-devops