
401 Unauthorized - HTTP | MDN - MDN Web Docs
Jul 4, 2025 · The HTTP 401 Unauthorized client error response status code indicates that a request was not successful because it lacks valid authentication credentials for the requested …
What Is a 401 Error? How to Fix 401 Unauthorized Status Codes
Nov 11, 2024 · Not sure what a 401 error is? Learn what 401 Unauthorized errors are, their causes, and the steps you can take to resolve and prevent them.
How to Fix a 401 Unauthorized Error? - GeeksforGeeks
Jul 12, 2025 · The "401 Unauthorized Error" is a standard HTTP response status code that indicates that a request sent to a server cannot be completed because it lacks valid …
5 Easy Methods to Fix “401 Unauthorized Error ... - Geekflare
Apr 7, 2025 · If you are browsing the web regularly, encountering errors such as “401 Unauthorized Error” is a familiar occurrence. This HTTP status code indicates that the user’s …
401 Error: What Is It and How to Fix It - phoenixNAP
May 29, 2025 · Learn what causes the 401 Unauthorized error and how to fix it quickly, whether you are visiting a website or managing one.
401 error: What is it, common causes and how to fix it
Dec 3, 2025 · Let’s get an overview of the 401 error code its common causes, and basic tips on how to fix it. What is the 401 Error code? HTTP error 401 means a user doesn’t have …
How to Fix the 401 Error (5 Solutions) - Kinsta®
Oct 1, 2025 · The 401 error is commonly associated with invalid authentication credentials. Find out more about the causes and fixes.
HTTP 401 Unauthorized: How to Fix, Prevent, Diagnose and Cause
Nov 17, 2025 · HTTP 401, often referred to as “Unauthorized Error”, is an HTTP status code indicating that the client's request lacks valid authentication credentials. In simpler terms, it …
How to fix 401 error quickly with 7 effective methods - Hostinger
Sep 3, 2025 · What causes the “401 Unauthorized” error? A 401 error occurs when a page requires valid authentication credentials but they’re missing, invalid, or expired.
What is “401 Error Unauthorized Access” and How to Fix it?
Sep 2, 2025 · Occasionally, when you try to access a web page, you may stumble across the “401 Error Unauthorized Access”. Like other HTTP errors, there could be various causes. This …