I'm trying to help my friend fix an issue with her Windows laptop.
She recently did some virus scan and now each time she attempts to login to Hotmail or Yahoo or other sites with secure connection she gets a warning that there is no certificate and the website she is trying to access is not secure, etc. This happens every time she tries to visit any email account.
This behaviour is the same on Chrome, Safari or IE.
A MacBook using the same wi-fi network doesn't have the same issues, so I think something is wrong with her computer.
I googled the issue and saw a number of people report having similar issue, but I did not come across any comprehensive fix.
Could you advise on how to fix this issue.