Salesforce CLI - How to fix error: 'EACCES': listen EACCES 127.0.0.1:1717

I faced the following error today when logging in Salesforce Dev Hub using the CLI.

'EACCES': listen EACCES 127.0.0.1:1717

And what I did to get over it was to change that default port 1717 to something else.

The steps are as below.

1. Open a Command Prompt window.
2. Go to a folder in your local machine using cd command. For example, in my case: cd Samples\Salesforce\my_sfdx_project
3. Create a Salesforce DX project using sfdx force:project:create command. In my case: sfdx force:project:create -n force-proj01
4. In the newly created folder force-proj01, open sfdx-project.json file and add following line: "oauthLocalPort": "7717",.
   The file will eventually contain:
   

   	{
   	"packageDirectories": [
   	{
   	"path": "force-app",
   	"default": true
   	}
   	],
   	"namespace": "",
   	"sfdcLoginUrl": "https://login.salesforce.com",
   	"oauthLocalPort": "7717",
   	"sourceApiVersion": "45.0"
   	}

   view raw sfdx-project.json hosted with ❤ by GitHub
5. Log in using the command sfdx force:auth:web:login -d -a DevHub. Now the browser window can open up. Fill in your user name and password to log in.
6. The browser now will redirect to such a link as http://localhost:1717/OauthRedirect?code=..., which is not existing.
7. Change the port in the link above from 1717 to 7717 and press Enter.
8. Now I can log in to Dev Hub successfully.

Certified Azure Developer - Passed

I just got certified today by taking the transition exam AZ-202.

It was a quick exam with 18 questions. It took me half an hour to complete, even though the allowed time is 150 minutes.