This will help to determine whether the issue is local or server-side. Important! Before you proceed with any of the methods, check whether the website is down for everyone or just you.
In this section, we will go over five methods to solve the 401 Unauthorized Error. 401.504 – the client’s hostname is included in the deny list on the server.401.503 – the IP address of the client is included in the deny list on the server.401.502 – This error occurs when a particular client (same IP) sends multiple requests to a single web server, reaching the dynamic IP Restriction Concurrent request rate limit.401.501 – too many requests have been generated by the client or the client has reached the maximum request limit.401.3 – the login attempt has failed due to the ACL (Access Control List).401.2 – the login attempt has failed due to the server configuration.Here is a list of the different variations of the 401 error and their descriptions: You may see one of the following error messages indicating the same error: When the 401 Error occurs, the browser will show an error code or message instead of taking you to the actual web page. The server might be blocking the client from accessing the requested resource on purpose, or the server’s authentication process is broken. This may be caused by several client-side reasons, including:įor instance, this error may appear when you’re trying to gain access to restricted resources like a password-protected web page without logging in first or entering the correct authentication credentials.Īlthough client-side issues seem to be the most common causes of this error, sometimes it can be caused by the web server.
When accessing a URL, your browser sends a request, which in this case was not verified. The 401 Unauthorized error indicates that the server’s request was not verified because it lacks valid authentication credentials for the target resource.
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