Invalid Certificate Errors: Troubleshooting Guide

Troubleshooting Invalid Certificate Errors

Question

A small office calls a technician to investigate some 'invalid certificate' errors from a concerned user.

The technician observes that whenever the user attempts to access a secure website from the Windows desktop, this error is encountered.

No other users in the office are experiencing this error.

Which of the following should the technician do NEXT? (Choose two.)

Answers

Explanations

Click on the arrows to vote for the correct answer

A. B. C. D. E. F.

AF.

Based on the scenario provided, a technician has been called to investigate "invalid certificate" errors encountered by a user in a small office. Here are the recommended steps to take:

Step 1: Verify the error message The technician should verify the exact error message the user is receiving, as this can provide important clues about the root cause of the issue. The error message might include the name of the website that the user is trying to access, as well as information about the invalid certificate.

Step 2: Check the system clock and date The technician should check the system clock and date on the affected user's computer. If the system clock is incorrect, it can cause certificate errors. The technician should ensure that the clock and date are set correctly.

Step 3: Check the certificate chain The technician should check the certificate chain of the website that the user is trying to access. This can be done by clicking on the padlock icon in the browser's address bar and checking the certificate information. The technician should ensure that the root certificate of the website's certificate chain is trusted by the user's computer.

Step 4: Check for proxy server settings The technician should check the proxy server settings in the user's browser. If there are any incorrect proxy server settings, it can cause certificate errors. The technician should remove any proxy server settings that are not required.

Step 5: Run anti-malware scans and download the latest Windows updates If none of the above steps have resolved the issue, the technician should run anti-malware scans and download the latest Windows updates. Malware can cause certificate errors, and outdated Windows can have security vulnerabilities that can cause certificate errors.

In summary, the recommended steps for a technician to take next are to verify the error message, check the system clock and date, check the certificate chain, check for proxy server settings, and if needed, run anti-malware scans and download the latest Windows updates. Answers A and F are the correct options.