Fred has received a report from a user about an issue that they are having. He remembers addressing the same issue for a different user a couple of weeks ago. He cannot seem to find any notes about how he resolved the problem. Which of the following steps of the CompTIA troubleshooting model did he most likely omit?

Document findings, actions, and outcomes.

Verify full system functionality and, if applicable, implement preventive measures.

Identify the problem.

Test the theory to determine cause.