Log in - npm commandline

I'm trying to run an npm install of one of our feeds, but keep getting blocked because of authentication issues

$ npm install --registry=https://proget.css.rxweb-dev.com/npm-feeds/private-npm/exhibitor-list@0.0.6

and I get an output of

npm ERR! registry error parsing json

npm ERR! Darwin 15.6.0

npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "install" "--registry=https://proget.css.rxweb-dev.com/npm-feeds/private-npm/exhibitor-list@0.0.6"

npm ERR! node v4.2.1

npm ERR! npm v3.7.3

npm ERR! Unexpected token <

npm ERR! <!DOCTYPE html>

npm ERR! <html>

npm ERR! <head>

npm ERR! <title>Log In</title>

npm ERR!

npm ERR! <link type="text/css" rel="stylesheet" href="/resources/InedoLibWeb/styles/common.css?416.1.0.0" />

................ etc etc.........

<span class="info-block info" style="text-align: left">The page you are attempting to access requires authentication and you are currently browsing as the anonymous user.</span>..........

I've tried playing with the ~/.npmrc file. So far I have:

registry=https://proget.css.rxweb-dev.com/npm-feeds/private-npm/

strict-ssl=false

but when I try to add the username, password, email, on the commandline using npm adduser I get the following error:

npm ERR! <html><head><title>Object moved</title></head><body>
npm ERR!Object moved to <a href="/log-in?ReturnUrl=%2Fnpm-feeds%2Fprivate-npm%2F-%2Fuser%2Forg.couchdb.user%3Aci-aem-user">here</a>.
npm ERR! </body></html>

So it seems that I can't manage send through the credentials when I run the command
Any help would be greatly appreciated

Product: ProGet
Version: 4.5.0

You're using the wrong url; you need to use the "API endpoint URL", not the URL from your web browser.

Based on your command above, that would be...

https://proget.css.rxweb-dev.com/npm/private-npm/

I tried that as well, but it also gives me the following error

Unexpected token <

npm ERR! <!DOCTYPE html>

npm ERR! <html>

npm ERR! <head>

npm ERR! <title>Not Found</title>

....

<p>
npm ERR! You were taken to this page because ProGet encountered an error without a specific or known resolution.
npm ERR! </p>

So it seems it's not looking at the package.json which is

{

"name": "ui.apps",

"version": "1.0.0",

"scripts": {

"test": "echo \"Error: no test specified\" && exit 1"

},

"dependencies": {

"exhibitor-list": "0.0.6"

}

The URL must still be incorrect; the /npm endpoints will return JSON-based content, where as the errors shown is HTML-based body content (<!DOCTYPE html>...).

You can use a tool like Fiddler to see precisely what URLs are being requested, and then hopefully diagnose/trace from there.