“Oh no. My laptop’s clock must be wrong again.” She checks the time—it’s correct. She restarts FortiClient. Same error. The Investigation (Raj’s Remote Debugging) Maya calls Raj. He asks a series of questions:
Would you like a step-by-step checklist for this error on Windows vs. Mac? Forticlient X509 Verify Certificate Failed
“Are you on a public Wi-Fi?” Maya: “Yes, coffee shop.” Raj: “Does the coffee shop have a ‘login’ or ‘accept terms’ page when you connect?” Maya: “Yes, I had to click ‘Accept’ to their Wi-Fi policy.” “Oh no
Keep http://neverssl.com bookmarked. It forces any captive portal to show up without HTTPS interference. Forticlient X509 Verify Certificate Failed