Google won't open on Firefox -- insecure site

My son's laptop has Windows 10 as its OS, the latest version of Firefox, no antivirus (just Windows Defender). When he tries to open Google, a message comes up that the site is insecure, and there is no possibility to add a certificate. Does anyone know how to get around this? I've tried the various things suggested online, but Google will just not open (even though it will open if he uses Edge or Chrome as a browser).

Florio

As your location is Italy, I've tried 'Google Italia' in both Edge and Firefox. I had to guess the address, so I tried google.co.it and google.it Both Edge and Firefox opened google.it but both Edge and Firefox report 'a problem with this website’s security certificate' for google.co.it - in Edge, clicking 'continue anyway' gets to a '404 page not found' error.



A Whois lookup shows Google as the Registrant for both domains:

Domain: google.it
Status: ok
Created: 1999-12-10 00:00:00
Last Update: 2016-05-07 00:46:51
Expire Date: 2017-04-21
Registrant
Organization: Google Ireland Holdings


Domain: google.co.it
Status: ok
Created: 2006-10-25 00:00:00
Last Update: 2016-05-12 00:42:04
Expire Date: 2017-04-26
Registrant
Organization: Google Ireland Holdings

So I suspect that your son's Firefox is trying to open the Google.co.it one, while Chrome and Edge are looking at Google.it

As to why Google have registered two domains for Italy, but only one of them works I cannot say.

Thanks for your reply, Bree. The correct address is Google. I haven't come across http://www.google.co.it.

The strange thing is that this problem has only just sprung up. Up until the other day, Firefox was opening Google without problems!

Florio.

Thanks for your input. I'll try the latest Beta on my son's laptop. However my own PC, which also runs Windows 10 and Firefox has no problems opening Google. This makes me think that something is set up incorrectly on my son's computer.
Florio

Florio said:

This makes me think that something is set up incorrectly on my son's computer

It could still be something as simple as the wrong address. Try typing 'google' in your son's Firefox address bar and see what the auto-complete puts on the end of it. One accidental visit to the wrong address could have added it to the auto-complete's memory.

Hi, @Florio:

In addition to the excellent suggestions already offered....

Quick question: is the computer's date and time correct on the system in question?

{Incorrect system date/time can cause that sort of problem...}

Cheers,
MM

Thank you all for your suggestions. I'm currently away from home for a couple of days, but as soon as I get back I'll follow up on your advice...
Florio