What does php 401 mean?

php 401 means that the server denies access to the resource requested by the user. This error code may appear in many different network settings, including web applications and APIs. The solution: 1. Check whether the user name and password provided are correct and re-provide them; 2. Check the permission settings in the resource and change them as needed; 3. Clear the browser cache and cookies, and try to reconnect; 4. Try to use Test on other browsers or devices.

The operating environment of this tutorial: windows10 system, php8.1.3 version, DELL G3 computer.

PHP The 401 error code means that the server denies access to the resource requested by the user. This error may confuse many users because it is generally believed that the 401 error code only appears when authenticating to the server is required. In fact, this error code can appear in many different network settings, including web applications and APIs.

Solutions to PHP 401 errors

1. Check the username and password: Verify that the username and password provided are correct and provide them again.

2. Check access permissions: If it is an access permission problem, check the permission settings in the resource and change it as needed.

3. Clear cache: Clear browser cache and cookies, and try to connect again.

4. Try again using other browsers or devices: Sometimes browsers or devices may block access to certain websites, so try using other browsers or devices for testing.

What is PHP 401 error code

First, let us take a look at the definition of PHP 401 error code. This error code is usually accompanied by a prompt, such as "HTTP Error 401 - Unauthorized" or "401 Unauthorized Error". It means: You are not authorized to access the credentials required to access the web page.

Simply put, if a page requires the user to authenticate, but no authentication credentials are provided in the request or If the credentials are incorrect, a 401 error code will appear. This usually appears on pages that require the user to log in to view.

Causes of PHP 401 errors

Unauthorized access: If a user attempts to access certain resources that require login, and the user does not provide login credentials, a 401 error will occur.

Invalid or wrong credentials: If the authentication credentials are provided If it is invalid or wrong, 401 will also be returned.

Network failure: Some network failures may cause 401 errors, such as network connection interruption or proxy server failure, etc.

Wrong permission settings: Server administrators can set permissions that prohibit certain users or groups from accessing certain resources. If a user tries to access resources that are not authorized to access, a 401 error will occur.

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