Windows has issues with date and time settings.
Windows has issues with date and time settings.
You're experiencing security certificate warnings while using a properly configured system. It sounds like the date/time settings are correct, but something else might be interfering. Clearing the CMOS didn't help either. You may want to verify your clock source or check if any background services are causing the issue.
Have you made sure to install a brand new version of Windows prior to this occurrence?
Try reinstalling Windows once more; it might resolve the issue.