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How to Fix a 401 Unauthorized Error?

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A 401 Unauthorized Error HTTP status code that indicates that the server received an unverified request.
 
 
In human terms, this means that the website you're trying to access won't load until you log-in with a valid user ID and password. This type of client error occurs on restricted resources, such as password-protected pages of your site that require authentication credentials.
 
 
Consequently, instead of gaining access to the web page you requested, the web browser will show you an error message. 401 Unauthorized Error messages can appear in any browser, so the messages appearing may vary from one browser to another.
 
 
There are a few reasons for the 401 Error code, like an incorrect URL, an invalid credential, DNS errors, firewall issue, or a faulty plugin.
 
 
The 401 Unauthorized Error and the 403 Forbidden error are at the same time similar and different. While the 401 Error indicates that the server received an unverified request, a 403 error indicates that although the client provided the needed authentication, they are still not allowed access to the requested resource.
 
 
The 4xx client-side errors are also different from the errors in the 5xx category, such as the 503 Service Unavailable error, which is server-side errors.
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