Which of the following is a common troubleshooting system message related to user authentication?

The correct choice, which addresses a common troubleshooting message related to user authentication, is centered around the phrase "Invalid username and password." This message directly indicates that the credentials provided by a user do not match any records in the authentication system, which is a typical scenario encountered during the login process.

When users attempt to log in, the system checks their input against stored information, and if there's a mismatch, the system generates this specific error message. This helps users identify that they need to verify their credentials, providing clear guidance on the issue at hand and prompting corrective actions such as trying again or resetting their password.

In contrast, while configuration errors, absence of a Trusted Services Manager (TSM) configuration, or connection errors can certainly present obstacles in broader system operations, they do not typically pertain specifically to user authentication failures. Each of those options relates to other aspects of system functionality and configuration rather than the verification of login credentials, which makes the "Invalid username and password" message the most relevant in the context of authentication issues.