You see this issue under the following conditions:

• You create a user account in ePO, and configure it to use ePO Authentication. 
• You then save the account. But before you log on using the ePO Authentication account, you change the authentication type to use one of the following authentication types:
  • Windows Authentication
  • Certificate-Based Authentication

This action causes ePO to prompt you to change your password when you try to log on. Because you can't use ePO to change your password for a Windows-based or Certificate-based account, you can't log on to the ePO console.