What is '401 Unauthorized'? Learn how to use and/or fix this HTTP status code, with free examples and code snippets. Learn about HTTP 401 status code meaning, causes, and solutions in this comprehensive guide. How to handle 401 unauthorized errors effectively Learn the difference between 401 and 403 status codes, and when to use them for authentication and authorization errors. See answers from experts and users, with examples and references to RFCs. HTTP 400 status codes are encountered when there is a problem making a request. A 401 error, in particular, happens when your browser denies you access to the page you’re trying to visit.
