title: 'Unable to Authenticate' when trying to connect to Azure DevOps Artifacts feed through npm; I get an E401 error
body: <p>I'm trying to connect to a Azure DevOps Artifacts feed, but I keep getting an E401 error. </p>
  
  <p>I've tried on a different computer and it connected just fine. I've uninstalled, and reinstalled my Node.js, and I still got the error. </p>
  
  <p>Below is the error I get when I run 'npm install'</p>
  
  <pre><code>npm ERR! code E401
  npm ERR! Unable to authenticate, need: Bearer authorization_uri=https://login.windows.net/*********, Basic realm="https://pkgsprodcus1.pkgs.visualstudio.com/", TFS-Federated
  </code></pre>
  
  <p>Below is what was added to the .npmrc file </p>
  
  <pre><code>registry=https://[org].pkgs.visualstudio.com/_packaging/[feed].Npm/npm/registry
  //pkgs.dev.azure.com/[org]/_packaging/[feed].Npm/npm/registry/:_authToken=[token]
  //pkgs.dev.azure.com/[org]/_packaging/[feed].Npm/npm/:_authToken=[token]
  </code></pre>
  
  <p>I expected to be connected to the feed after adding my info to the .npmrc file, and running 'npm install'</p>