EMAIL ACCOUNTS

You have not mentioned which email account is that.

You may have enabled two step verification on Google --> Sign in with App Passwords - Google Account Help

You may have enabled Authenticator for Yahoo --> Generate and manage third-party app passwords | Yahoo Help

You may have enbled 2-step verification for Outlook --> Manage app passwords for two-step verification

You may have activate 2-step verification for Aol --> Create and manage third-party app passwords - AOL Help

If you need help with your email account, contact your email provider. I am not sure what you mean that you need to update your email password to be able to use your email account.