I am Stella , Digital Marketing Manager at WordPress Migration Help based in USA. At WordPress Migration Help we create amazing WordPress Websites or We offer the complete wordpress migration services solution and solving 401 wordpress errors. This error is very specific, and it happens due to improper authentication. The error indicates that the WordPress host server or URL you are trying to access is denying service. The client is not authorized to access the specific resource on the server. To resolve wordpress 401 error, you have to diagnose the exact source of the problem.