Authorization errors occur when either the username or the password is incorrect as the publishing program tries to connect to the server. I would need to know what program you are using and if you have changed any cpanel information prior to the error.
In the case of the Premium Website Builder program, this occurs when the cPanel password for the hosting account has been changed. The builder has a publishing password that must match the cPanel if you are using the same username to publish. Note this is different than the login username and password.
Below is a link to an article that displays the publishing settings you will need to sync with the cpanel username/password.
Publishing with the Premiumm Website Builder
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