Solutions to problems with Skype login address or login credentials

problem

When we encounter the problem that Skype cannot log in, it prompts that the credentials have expired

Clean up expired certificates

First, find the Control Panel Credential Manager

Delete the expired account credentials

Reset IE configuration

Search Internet Explorer in the start menu

Open IE, locate the Internet Options in the settings

select Advanced Options in the reset function

Be careful to close all IE windows and Outlook windows, otherwise it cannot be reset.
Check to delete personal settings and click Reset.
Restart the computer and log in to SKype again. The problem is fixed