Can’t connect to private Azure Artifacts repository, Error 404 using valid credentials

Sonatype Nexus Repository
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Hi, I am trying to use Nexus as a mirroring server to a Azure artifacts repository, which requires authentication, but I’m not able to achieve this. I tried different things, including using HTTP Auth settings for the proxy, with and without “Enable Cookies” and “Enabled circular redirect”, but I always get an error like:
“UNKNOWN com.sonatype.nexus.repository.nuget.internal.NugetFeedFetcher - Status code 404 contacting https://pkgs.dev.azure.com/**************/nuget/v3/index.json/Search?$skip=0&$top=80&searchTerm=’’&targetFramework=’’&$filter=IsLatestVersion&includePrerelease=false&semVerLevel=2.0.0&$orderby=Id”

(Note: I can access the Azure repository directly without going to the Nexus proxy, so its not a problem with the Azure respository)

Is this a supported scenario currently? Do I need to configure something else?

Thanks,
Nelson

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@nelsonduvall What URL are you using to connect your client to NXRM?

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@jstephens I’m using an URL like http://nexus.domain/repository/nuget-proxy/ where the nuget-proxy is the proxy configured to the Azure repository.

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Hi @jstephens , any help with this?

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Are there any news or solutions. We struggle with the same problem:
Try to proxy a azure devops artifact repository without success. We tried it with a private feed (with credentials) and also a public feed but does not work in anyway.

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@jstephens we are evaluating the possibility to have our DevOps artifacts package also to be published in the on-prem Nexus registry. Is nexus team aware of the issue posted in this thread, where could we find the technical support could help us to solve this issue?

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Does Azure require pre-emptive authentication?

In terms of technical support, if you have a support contract you should file a ticket.

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I have this working using Nexus Repository 3.38.0-01.

In the below example, I’ve substituted some real world values as follows:

To get this working I had to:

  1. Log into Azure DevOps (pretend my username is bob@test.com) and create a Personal Access Token (PAT) with the scopes: Packaging (Read) - access this at https://dev.azure.com/my-ado/_usersSettings/tokens

  2. Log into Nexus Repository as Admin and create a new Repository as follows:

I could then access this URL successfully against my Nexus Repository:
https://my-nexus.tld/repository/nuget-azure-devops-proxy/index.json

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