Google untrusted connection - Firefox

[nac]

I am not sure when this problem started whether today afternoon or evening??? I don't know.

If I google something in firefox, it says the connection is untrusted. This is the snap shot of what I am getting.

*i102.photobucket.com/albums/m108/tkphotos1/Firefox_zps99763cb1.png

Google is working fine in Internet explorer. I don't know whether this is a virus/malware attack or something. I found my anti virus couldn't start few hours ago. I tried to start it, but couldn't. For temporarily I turned on Windows defender and firewall while I was downloading an anti virus trial (Kaspersky).

Now it's installed and updated and scanned. Nothing found. System is clean...

I have tried following things to fix the issue, but till [STRIKE]not[/STRIKE] now no success.

- deleted cert8.db file
- restart disabling add ons
- safe mode
- reset firefox
- uninstall and fresh installation
- I have checked my system time. It's correct

Anybody know what happened to my firefox browswer? Any help would be appreciated guys... It's kinda little urgent.

- - - Updated - - -

- I have cleared cookies, history and all...

This is what I see if I click "get certificate"

*i102.photobucket.com/albums/m108/tkphotos1/Cert_zps47ba0729.png

- - - Updated - - -

Found a solution here...

Uff... It took this many hours to find a successful solution.

Tried to restore, but the restore point I have is very recent (just a few hours ago)

You can find the solution in the above website, given by the member called "Kilauea".

 

[$hadow]

Well that is weird. But again in the world of internet anything is possible. BTW thanks for the share

 

[Vyom]

Well nac, looks like you were stuck in a nightmare yesterday. I use firefox, and didn't face this issue.
I am glad that you got it solved.

Btw, so in a nutshell, what was the problem with? Antivirus? Or browser?

 

[nac]

^ I guess it's the browser/AV combination. It was fine with the previous AV.

This is what I read in mozilla support forum. Quoting a member jscher2000.

A common problem recently is Firefox not being set up to work with your security software. Some security suites include a filtering feature. In order to filter secure connections (HTTPS URLs), the security software presents a fake certificate to Firefox so it can intercept and stand in the middle of the secure connection. To have Firefox trust these certificates, you may need to do something such as import a root certificate, or click something in your security software's settings.

 

[whitestar_999]

It is a known fact that now-a-days almost all AVs use their own security certificate to intercept https traffic in order to scan it but usually it is not enabled by default.frankly speaking i think it is just a waste of cpu because https scanning or not a good AV should be able to prevent any identify any malware as soon as it lands on your hdd even if through a https connection which is quite rare at least in present time.