在节点 JS 中构建 Azure web 应用程序时出现权限被拒绝错误

Question

I am trying to do a manual build of an Azure web app that is running on a Windows instance using Node JS and Express. I am getting this error message when I run npm run start;

node:events:505
  throw er; // Unhandled 'error' event
  ^

Error: listen EACCES: permission denied :::4000
at Server.setupListenHandle [as _listen2] (node:net:1372:16)
at listenInCluster (node:net:1420:12)
at Server.listen (node:net:1508:7)
at Function.listen (C:\home\site\wwwroot\node_modules\express\lib\application.js:618:24)
at Object.<anonymous> (C:\home\site\wwwroot\index.js:39:5)
at Module._compile (node:internal/modules/cjs/loader:1105:14)
at Object.Module._extensions..js (node:internal/modules/cjs/loader:1159:10)
at Module.load (node:internal/modules/cjs/loader:981:32)
at Function.Module._load (node:internal/modules/cjs/loader:822:12)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:77:12)
at node:internal/main/run_main_module:17:47
Emitted 'error' event on Server instance at:
at emitErrorNT (node:net:1399:8)
at processTicksAndRejections (node:internal/process/task_queues:83:21) {
  code: 'EACCES',
errno: -4092,syscall: 'listen',
address: '::',
port: 4000

I have tried changing the port number, carefully checked the index.js, carefully checked the package.json, rerun npm install, and am still getting the same error. Any ideas would be greatly appreciated!!

Answer 1

• Most probably this issue is because of lack of a web.config file in the folder.

• Now instead of creating web.config on our own If we deploy the code using git it will create the file for us.

• In azure there are multiple option such as azure GitHub action, azure repo and bitbucket etc.

Here I have deployed using local git and I am deploying an express app.