# Npm ERR! 503 Service Unavailable

**URL:** <https://community.sonatype.com/t/npm-err-503-service-unavailable/7159>\
**Category:** Sonatype Nexus Repository\
**Tags:** npm\
**Created:** [August 20, 2021, 11:11am UTC](https://community.sonatype.com/t/npm-err-503-service-unavailable/7159 "2021-08-20T11:11:26Z")\
**Posts on this page:** 1\
**Showing post:** 1

<div class="post-metadata">

**Author:** ![anhle77](https://avatars.discourse-cdn.com/v4/letter/a/a587f6/32.png) [@anhle77](https://community.sonatype.com/u/anhle77)\
**Post date:** [August 20, 2021, 11:11am UTC](https://community.sonatype.com/t/npm-err-503-service-unavailable/7159/1 "2021-08-20T11:11:26Z")

</div>

Using

- nexus 3 = Sonatype Nexus Repository Manager OSS 3.33.1-01
- node = v14.17.3
- npm = 6.14.13
- Zscaler
- Windows 10

I have definied 3 npm repositories in nexus3:

- npm-group
- npm-private
- npm-registry

I have added in .npmrc :

- 3 proxies : http-proxy, https-proxy and proxy
- registry=http://localhost:9081/repository/npm-group/
- email and \_auth
- always-auth=true

I have added in packages.json :  
“publishConfig”: { “registry”: “[http://localhost:9081/repository/npm-private/](http://localhost:9081/repository/npm-private/)” }

_ **Here is my packages.json** _

```auto
{
  "name": "wampr_api",
  "version": "1.0.0",
  "description": "WORLDLINE - Report on tests API",
  "main": "index.js",
  "publishConfig" : {
    "registry" : "http://localhost:9081/repository/npm-private/"
  },
  "scripts": {
    "start": "nodemon -L index.js",
    "generate-docs": "node_modules/.bin/jsdoc -c config/jsdoc.json"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "bcrypt": "^5.0.1",
    "bluebird": "^3.7.2",
    "cors": "^2.8.5",
    "cron": "^1.8.2",
    "csv-parser": "^3.0.0",
    "dateformat": "^4.5.1",
    "dotenv": "^10.0.0",
    "express": "^4.17.1",
    "extract-zip": "^1.6.7",
    "hashmap": "^2.4.0",
    "hashset": "0.0.6",
    "html-pdf": "^3.0.1",
    "mongoose": "^5.13.3",
    "morgan": "^1.10.0",
    "move-file": "^2.1.0",
    "nodemailer": "^6.6.3",
    "nodemon": "^2.0.12",
    "ps-node-promise-es6": "0.0.1",
    "puppeteer": "^10.1.0",
    "request": "^2.88.2",
    "request-promise": "^4.2.6",
    "rotating-file-stream": "^2.1.5",
    "sharp": "^0.28.3",
    "shelljs": "^0.8.4",
    "string-contains": "^0.1.0",
    "substrings": "^1.1.1",
    "xml2js": "^0.4.23",
    "xsd-schema-validator": "^0.7.0"
  }
}

```

In order to deploy my package to the NEXUS, I do the npm command : npm publish  
But I still get the error :

**"npm ERR! code E503 npm ERR! 503 Service Unavailable - PUT [http://localhost:9081/repository/npm-private/wampr\_api](http://localhost:9081/repository/npm-private/wampr_api)"**

2 weeks ago, I could install from the nexus / deploy to the nexus. But now it is not working fine. I can not understand why this issue even if I configure proxy for nexus.

Please can you help me ?

---

_[View the full topic](https://community.sonatype.com/t/npm-err-503-service-unavailable/7159)._