# Npm ERR! 503 Service Unavailable **URL:** \ **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:** 7\ **Page:** 1
**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")
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 ? ---
**Author:** ![mpiggott](https://avatars.discourse-cdn.com/v4/letter/m/f0a364/32.png) [@mpiggott](https://community.sonatype.com/u/mpiggott)\ **Post date:** [August 20, 2021, 1:45pm UTC](https://community.sonatype.com/t/npm-err-503-service-unavailable/7159/2 "2021-08-20T13:45:04Z")
I don’t think the 503 error code would be from Nexus, are you running a proxy server or perhaps some AV scanner perhaps that might be interferring? ---
**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, 2:12pm UTC](https://community.sonatype.com/t/npm-err-503-service-unavailable/7159/3 "2021-08-20T14:12:04Z")
I am always running a proxy server (zscaler) and so I add the specific proxy to the zscaler in the .npmrc file. I do not know what is the AV scanner. ---
**Author:** ![mpiggott](https://avatars.discourse-cdn.com/v4/letter/m/f0a364/32.png) [@mpiggott](https://community.sonatype.com/u/mpiggott)\ **Post date:** [August 20, 2021, 4:40pm UTC](https://community.sonatype.com/t/npm-err-503-service-unavailable/7159/4 "2021-08-20T16:40:34Z")
Sorry AV = Anti Virus Scanner. Basically I’m saying I do not believe the 503 is a status code from Nexus, something between npm and Nexus is returning the 503. ---
**Author:** ![anhle77](https://avatars.discourse-cdn.com/v4/letter/a/a587f6/32.png) [@anhle77](https://community.sonatype.com/u/anhle77)\ **Post date:** [August 23, 2021, 11:09am UTC](https://community.sonatype.com/t/npm-err-503-service-unavailable/7159/5 "2021-08-23T11:09:44Z")
> [@mpiggott](#): > > something between npm and Nexus is returning the 503. Hello Thank you for your reply and your help ! I have tried to add no-proxy and it is working fine. I can deploy to the nexus ---
**Author:** ![anhle77](https://avatars.discourse-cdn.com/v4/letter/a/a587f6/32.png) [@anhle77](https://community.sonatype.com/u/anhle77)\ **Post date:** [August 23, 2021, 1:28pm UTC](https://community.sonatype.com/t/npm-err-503-service-unavailable/7159/7 "2021-08-23T13:28:52Z")
I can publish my package to nexus but I can’t install my package from the nexus. I have tested npm install mypackage@version with registry=http://localhost:8081/repository/npm-group/ But it is not fine 🙂 ```auto c:\WORKSPACE\PROJECTS\WAMPR\TESTAPI>npm install wampr_api@1.0.0 npm ERR! code E404 npm ERR! 404 Not Found - GET http://localhost:8081/repository/npm-group/bcrypt - Not found npm ERR! 404 npm ERR! 404 'bcrypt@^5.0.1' is not in the npm registry. npm ERR! 404 You should bug the author to publish it (or use the name yourself!) npm ERR! 404 It was specified as a dependency of 'wampr_api' npm ERR! 404 npm ERR! 404 Note that you can also install from a npm ERR! 404 tarball, folder, http url, or git url. ``` " **npm ERR! 404 ‘bcrypt@^5.0.1’ is not in the npm registry.**" ==\> when replacing with registry=https://registry.npmjs.org, it is ok ==\> when replacing with registry=http://localhost:8081/repository/npm-group/, it is not ok Can you help me ? ---
**Author:** ![anhle77](https://avatars.discourse-cdn.com/v4/letter/a/a587f6/32.png) [@anhle77](https://community.sonatype.com/u/anhle77)\ **Post date:** [August 23, 2021, 2:23pm UTC](https://community.sonatype.com/t/npm-err-503-service-unavailable/7159/8 "2021-08-23T14:23:26Z")
Finally, I can install my package from Nexus because I remove https-proxy from the .npmrc… I don’t really understand about proxy