Hi David
I think you should try this link.
http://www.toppctech.com/fix-net-err-cert-authority-invalid-error/
W ôdpowiedzi na Ambrish Tiwari
Re: NET::ERR_CERT_AUTHORITY_INVALID 3.2.2
Napisane bez: Amit Shingala ()
Thanks for the solution. Also do check problem with wireless adapter or access point