The 401 Unauthorized error is an HTTP status code that means the page you were trying to access cannot be loaded until you first log in with a valid user ID and password.
If you have just logged in and received the 401 Unauthorized error, it means that the credentials you entered were invalid for some reason.
401 Unauthorized error messages are often customized by each website, especially very large ones, so keep in mind that this error may present itself in more ways than these common ones:
HTTP Error 401 - Unauthorized
The 401 Unauthorized error displays inside the internet browser window, just as web pages do.
Tip: The webmaster of some websites can be reached via email at email@example.com, replacing website.com with the actual website name.
If you’ve followed all the troubleshooting advice above but are still receiving a 401 Unauthorized error when accessing a certain web page or site, see Get More Help for information about contacting me on social networks or via email, posting on tech support forums, and more.
Be sure to let me know that the error is an HTTP 401 error and what steps, if any, you’ve already taken to fix the problem.