'Unable to Authenticate' when trying to connect to Azure DevOps Artifacts feed through npm; I get an E401 error

node.js azure npm azure-devops
CourtneyH picture CourtneyH · May 2, 2019 · Viewed 52.3k times · Source

I'm trying to connect to a Azure DevOps Artifacts feed, but I keep getting an E401 error.

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.

Below is the error I get when I run 'npm install'

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

Below is what was added to the .npmrc file 

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]

I expected to be connected to the feed after adding my info to the .npmrc file, and running 'npm install'

Answer

Simon Clough picture Simon Clough · Nov 25, 2020

I had an issue where I couldn't connect, even though I had the same .npmrc as other repos on the same machine. Running vsts-npm-auth -config .npmrc just exited, presumably happy with the cached credentials.

However, the credentials it had seemed to be bad. The solution was to force refreshing the token: vsts-npm-auth -config .npmrc -force

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