NPM behind a proxy with the character "@" in my password

Question

I am trying to set NPM (v9.4.0) proxy but I am facing the following error when running npm i -g npm@latest:

npm ERR! code E407
npm ERR! 407 Proxy Authentication Required: npm@latest

The password I use for the proxy contains an "@" character an I suspect this is the root cause of the issue. I tried with a "\" before the "@" and also

npm config set proxy http://"user:MyP@ssword"@proxy.big.corp.fr:8080
npm config set https-proxy http://"user:MyP@ssword"@proxy.big.corp.fr:8080

but without success. Does anyone have an idea?

I already tried, checking 10 times the password, without success. — , Jan 12 '18 at 10:32
ahh... Then I will try to change my password :-). I'll let you know. — , Jan 12 '18 at 10:36
It applies for all URL reserved characters. You can try url-encode the password, but I am not sure if it works. http://blooberry.com/indexdot/html/topics/urlencoding.htm — kkkkkkk, Jan 12 '18 at 10:57

score 11 · Answer 1 · edited Dec 18 '20 at 22:53

11

After many research about this problem and test more than 10 solutions like set with this commands:

npm config set proxy "http://domain%5Cusername:password@servername:port/"

but not worked for me. then test CNTLM but CNTLM didn't work for me. I tried all possible combinations. NPM was giving Authentication error. finally i test Fiddler and saved my time. It is easy to install and configure. Open Fiddler => Rule => Automatically Authenticated.

Open C:\Users\your username\.npmrc file and use this configurations

registry=http://registry.npmjs.org

proxy=http://127.0.0.1:8888

https-proxy=http://127.0.0.1:8888

http-proxy=http://127.0.0.1:8888

strict-ssl=true

remove npm folder in this path C:\Users\your username\AppData\Roaming. Using following command:

npm install express
npm uninstall -g @angular/cli
npm cache clean --force
npm install -g @angular/cli

edited Dec 18 '20 at 22:53

granadaCoder

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answered May 07 '18 at 12:44

saeid mohammad hashem

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Tried everything, but only this worked. Really important is the 'Automatically Authenticated' check. Thanks! – user1797792 Nov 14 '18 at 10:10
Where it is 'Automatically Authenticated' located – Karthiga Feb 28 '20 at 07:35
It is in the answer. "Open FIDDLER => Rule => Automatically Authenticated." – granadaCoder Dec 18 '20 at 23:14

Gilberto Alexandre · Answer 2 · 2018-05-07T16:58:34.100

3

You can also convert your password to BASE64 encode

npm config set proxy http://<user>:<base64 password>@proxy.big.corp.fr:8080

Sample:

npm config set proxy http://myuser:bXlwYXNzd29yZA==@proxy.big.corp.fr:8080

To convert use site https://www.base64encode.org/

edited May 07 '18 at 16:58

answered May 03 '18 at 22:09

Gilberto Alexandre

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this is a nice solution – RAUL QUISPE Mar 12 '20 at 17:08

score 0 · Answer 3 · answered Jan 18 '18 at 11:55

0

I checked and found, in my company, an anonymous proxy exists. This also solved my problem.

answered Jan 18 '18 at 11:55

NPM behind a proxy with the character "@" in my password

3 Answers3

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