Using npm behind a firewall using Visual Studio 2015

Question

I am trying to use the new npm support in Visual Studio 2015, but are facing some problems. I am located behind the corporate firewall.

I tried to add "grunt" from the package.json file and see this npm related result.

npm http GET https://registry.npmjs.org/grunt npm http GET https://registry.npmjs.org/grunt-bower-task npm http GET https://registry.npmjs.org/grunt-contrib-cssmin npm http GET https://registry.npmjs.org/grunt-bower-task npm http GET https://registry.npmjs.org/grunt-contrib-cssmin npm http GET https://registry.npmjs.org/grunt npm http GET https://registry.npmjs.org/grunt npm http GET https://registry.npmjs.org/grunt-bower-task npm http GET https://registry.npmjs.org/grunt-contrib-cssmin npm ERR! Error: UNABLE_TO_VERIFY_LEAF_SIGNATURE npm ERR! at SecurePair.<anonymous> (tls.js:1367:32) npm ERR! at SecurePair.emit (events.js:92:17) npm ERR! at SecurePair.maybeInitFinished (tls.js:979:10) npm ERR! at CleartextStream.read [as _read] (tls.js:471:13) npm ERR! at CleartextStream.Readable.read (_stream_readable.js:340:10) npm ERR! at EncryptedStream.write [as _write] (tls.js:368:25) npm ERR! at doWrite (_stream_writable.js:225:10) npm ERR! at writeOrBuffer (_stream_writable.js:215:5) npm ERR! at EncryptedStream.Writable.write (_stream_writable.js:182:11) npm ERR! at write (_stream_readable.js:601:24) npm ERR! If you need help, you may report this *entire* log, npm ERR! including the npm and node versions, at: npm ERR! <http://github.com/npm/npm/issues> npm ERR! System Windows_NT 6.1.7601 npm ERR! command "C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\Common7\\IDE\\Extensions\\Microsoft\\Web Tools\\External\\\\node\\node" "C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\Common7\\IDE\\Extensions\\Microsoft\\Web Tools\\External\\npm\\node_modules\\npm\\bin\\npm-cli.js" "install" npm ERR! cwd C:\Data\Develop\Playground\WebBasics2 npm ERR! node -v v0.10.31 npm ERR! npm -v 1.4.9 npm 

I saw some posts where you can configure node to ignore SSL, but don’t know how to do it in Visual Studio 2015.

Please help Best regards, Thomas

Answer 1

The following steps will work for VS 2015

1- Run the command line as Administrator

2- go to Path of External tools for VS 2015 in your case it is "C: \ Program Files (x86) \ Microsoft Visual Studio 14.0 \ Common7 \ IDE \ Extensions \ Microsoft \ Web Tools \ Editors

3-npm config set ca = ""

4- npm config set strict-ssl false

5- npm install npm -g --ca = null

Answer 2

In my case, the above solution did not work. It worked after updating the .npmrc file and when starting npm using Fiddler. Here are the steps that worked for me:

• After installing npm, update the .npmrc file located in the C: \ Users \ 'username' directory:

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 = false false

• Open Fiddler, and on the Rules tab, select Automomatically Authenticate. Don't forget that Fiddler is listening on port 8888.
• When opening Fiddler, the npm shouwl command works fine in Visual Studio

This should work behind a corporate firewall with domain-joined systems.