Which of the following status codes of Microsoft AD indicates a failed event due to a misspelled or bad user account?

The status code 0xC0000064 from Microsoft Active Directory indicates that a specified user account does not exist. This typically occurs when there is a failed login attempt caused by a misspelled or incorrect user account name. When a user's credentials are checked against the directory and the user does not exist, this code is returned to signify that the account name typed in cannot be found, reinforcing the idea that the issue is related to the account being invalid or nonexistent.

Understanding this context is essential for recognizing and troubleshooting login issues in environments that utilize Active Directory. It emphasizes the importance of correctly entering user credentials in situations where authentication fails.