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6. HTTP Responses | Error Codes

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403 Forbidden

The HTTP403 Forbiddenresponse status code indicates that the server understands the request but refuses to authorize it.

This status is similar to401, but for the403 Forbiddenstatus code, re-authenticating makes no difference. The access is permanently forbidden and tied to the application logic, such as insufficient rights to a resource.

 

503 Forbidden

The 503 error indicates an unresponsive script.

As with Bad Gateway errors, this one is triggered when a server is experiencing unusual levels of traffic and increased load. If the error doesn’t disappear after a while and your host’s support team confirmed everything is fine on their end, you need to check on your plugins.

Switching back to the default theme and conflict testing is suggested in attemping to fix the issue.

 

500 Internal Server Error

It’s one of the most common errors you can encounter and, coincidentally, also one of the most frustrating ones to troubleshoot.The server displays a 500 error when it knows something is wrong but unsure what the exact problem is. The potential causes range from stale browser cache to hardware failure.

 

Steps to resolve:

If your website returns an Internal Server Error message, and you’re sure the problem doesn’t lie within your browser or your host, you could try: 

 

1. Raising the memory limit by editing the wp-config.php file or modifying the php.ini configuration. 

2. Reviewing and dealing with a corrupt .htaccess file, so restoring it could also be the way out.

3. Try deactivating your plugins to see if any of them is causing the issues.

Try recreate the issue on a from a fresh WordPress installation.

 

Other HTTP response status codes

HTTP response status codes indicate whether a specific HTTP request has been successfully completed. Responses are grouped in five classes:

  1. Informational responses(100–199)
  2. Successful responses(200–299)
  3. Redirection messages(300–399)
  4. Client error responses(400–499)
  5. Server error responses(500–599)

More Information https://developer.mozilla.org/en-US/docs/Web/HTTP/Status

 

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