Tutorial run causes Error: listen EACCES: permission denied 0.0.0.0.9001

[romanguerrero]

Expected behavior

It should output:
No unit test coverage for node
node: 0 passed, 0 failed

Current behavior

Error: listen EACCES: permission denied 0.0.0.0:9001
at Server.setupListenHandle [as _listen2] @ net.js:1262:19
at listenInCluster @ net.js:1327:12
at Server.listen @ net.js:1414:7
at new WebSocketServer @ node_modules\ws\lib\websocket-server.js:74:20
@ src\lib\Server.ts:82:17
at new Promise @ anonymous
at Server.start @ src\lib\Server.ts:73:11
@ src\lib\executors\Node.ts:361:15
at new e @ node_modules@theintern\common\index.js:16:5068
@ src\lib\executors\Node.ts:350:53

Steps to reproduce (for bugs)

1. Download Intern.
   npm install --save-dev intern
   Add the following to the "compilerOptions" object in tsconfig.json:
   "types": [
   "intern",
   "systemjs"
   ]
2. Configure Intern
   Create a intern.json file in the root of project with:
   {
   "browser": {
   "loader": {
   "script": "systemjs"
   },
   "plugins": {
   "script": "_dist/src/system.config.js",
   "useLoader": true
   }
   },
   "environments": ["node", { "browserName": "chrome" }]
   }
3. Run 'npm test'

Environment

Intern version: 4.0.0
Node version: v10.16.3
NPM version: 6.14.8
Browser version: Firefox 83.0

[lechelt]

Hi,
Unfortunately I am struggeling with the same issue.
How did you solve it?

[romanguerrero]

@lechelt , I didn't solve it, unfortunately. Reopening because others are having the same issue

[lechelt]

I found a solution. Another process is blocking the port 9001. In my case it is an Intel Driver Graphic software.
Here is a link how to fix this:
eclipse-mosquitto/mosquitto#1580 (comment)