Having certificate issues using Explorer or Chrome : NET::ERR_CERT_INVALID

I have have issues accessing all https web pages. My laptop is running Windows 8.1 and running the free version of AVG.

for exemple :

NET::ERR_CERT_INVALID

Subject: *.flighthub.com

Issuer: AVG Technologies

Expires on: 7 avr. 2018

Current date: 2 oct. 2017

Hello Fred,

I understand the inconvenience.
Please provide the screenshot of the error message that is appearing for HTTPS web pages that you try to access.
Please follow the steps as mentioned in this article: http://support.avg.com/SupportArticleView?urlname=How-to-use-Passive-Mode to disable AVG Antivirus temporarily and check whether it resolves the issue.

Thank you for the information.
It seems that the issue isn't due to AVG Antivirus.
You can try accessing the website from another web browser to get additional information.

Hello Fred,

I understand the inconvenience.
Please provide the screenshot of the error message that is appearing for HTTPS web pages that you try to access.
Please follow the steps as mentioned in this article: http://support.avg.com/SupportArticleView?urlname=How-to-use-Passive-Mode to disable AVG Antivirus temporarily and check whether it resolves the issue.

I tried the passive mode and still have the issue

cerificate error