How to fix the 401 unauthorized error (Nothing else worked)

What does 401 unauthorized error mean? How to fix it?

This error means that you won't be able to load the page you were trying to visit, unless you provide a valid username and password.

This error code is accompanied by one of the following error messages:

• 401 Unauthorized;
• 401 Authorization Required;
• HTTP Error 401 - Unauthorized
  
  

The most common reasons for this error, aside from entering the wrong username and password include:

• The web browser itself;
• Corrupt cached files and cookies;
• The website itself (e.g. wrong URL redirection).
  
  

The solutions listed below will show you how to fix this error, on your Windows PC or Mac computer, as well as Android (Samsung, Huawei, Xiaomi) or iOS (iPhone, iPad, iPod touch) smartphone or tablet. Check them out.