VSTS/DevOps - npm private feed 401

[Venipa]

Before opening an issue please read this.

Are you reporting a bug or a feature request ?

• [x] Bug
• [ ] Feature request

Description

• installed yarn via extension
• run yarn install with vsts feed

Expected behavior

200 instead of 401 Unauthorized

Reproduction

Create feed, create build CI with yarn as install

info If you think this is a bug, please open a bug report with the information provided in "/vsts/agent/_work/1/s/yarn-error.log".
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.
##[error]Error: The process '/opt/hostedtoolcache/yarn/1.15.2/x64/yarn-v1.15.2/bin/yarn' failed with exit code 1

yarn-error.log shows the yarn.lock In order to allow us to quickly reproduce you issue please include a link to a reproduction repository

System information

VSTS or TFS:

• [x] VSTS
• [ ] TFS

Agent:

• [ ] Hosted
• [x] Custom

OS:

• [ ] Windows
• [ ] Mac
• [x] Linux

Yarn version: 1.15.2

Node version: (10.15)

used with docker https://github.com/Microsoft/vsts-agent-docker

[sandorfr]

Hi, Could you please try with the 3.0 version? If it does not help please provide the full trace in debug mode with yarn in --verbose

[sandorfr]

Closing, if it's still a problem for you let me know I'll reopen

[bamminger]

@sandorfr Works fine with 3.0 preview. Thank you!

[Venipa]

 "https://****.pkgs.visualstudio.com/_packaging/*****-Feed/npm/registry/@angular/common/-/common-8.2.3.tgz: Request failed \"401 Unauthorized\"".```
leaves just me