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 resource.

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 authentication credentials.

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.

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 permission to access …

Nov 6, 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 means the server …

Dec 20, 2024 · What is HTTP 401 Error? The HTTP 401 Unauthorized error is a status code 401 returned by the server when authentication fails. It means the server has received your request, but it …

Oct 1, 2025 · The 401 error is commonly associated with invalid authentication credentials. Find out more about the causes and fixes.

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 article will outline …

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.

Aug 2, 2023 · HTTP response status code 401 Unauthorized is a client error that is returned by the server to indicate that the HTTP request has to be authenticated, and that appropriate login …