Warning | Connection not private

kimoo

i all time get a message from 5 days ( Your connection is not private ) with mostly all sites

before 5 or 6 days , my internet was work very fine and i was browse normally without error with Opera 12.18 under Win XP
but now and from about 6 days i all time get this error all times with mostly all site

i was though it's malware or virus but i made a scan with malwarebyte and some antiviruses but found no thing
i changed windows same problem .
i upgraded to Windows 7 same problem .
i changed DNS from our local ISP default dns to google DNS but also same problem .

now i got last version of Vivaldi and same problem also with different error message
here is an example

Your connection is not private
Attackers might be trying to steal your information from www.techspot.com (for example, passwords, messages, or credit cards). Learn more
NET::ERR_CERT_AUTHORITY_INVALID
Subject: *.techspot.com

Issuer: Sectigo RSA Domain Validation Secure Server CA

Expires on: Jan 2, 2022

Current date: May 14, 2020

PEM encoded chain:
-----BEGIN CERTIFICATE-----
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jC/1vos=
-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
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-----END CERTIFICATE-----
-----BEGIN CERTIFICATE-----
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0fKtirOMxyHNwu8=
-----END CERTIFICATE-----

i not know what should i do now it's strange problem first time happened in my life remember again i all my life was use opera 12.18 under XP without errors but those error above are only from 6 days till now

--
ModEdit: Title

kimoo

@kimoo i forgot to say that only social media works fine without those errors , like facebook and youtube

kimoo

This post is deleted!

kimoo

@Gwen-Dragon so now if we will fix it for Vivaldi what about other sites ? i will install every site certificate ? and why everything was work fine before some days ago ?
it's strange , :face_with_cold_sweat:

Ayespy

@kimoo Updating your windows root certificates should fix it.

Pathduck

@kimoo Your screenshots are clearly taken from Opera 12. Why would you post about problems in Opera 12 on the Vivaldi forum?

You could post on the Technology/Browsers category, or maybe in Vintage Computing
Then maybe someone who know old Opera and this ancient OS could help you.
https://forum.vivaldi.net/category/17/browsers
Maybe a mod could move this post there?

kimoo

@Ayespy How i do this sir with one file ? if there is one file needed for windows that contains all certificate will be good , cause it's not sense to search for every site certificate

kimoo

@Pathduck look well please in post , it's same problem with Vivaldi

Pathduck

@kimoo OK. Please don't post screenshots from Opera12 when you want help with Vivaldi issues.

How long has it been since you ran windows update? Vivaldi uses the OS certificate store and this needs to be updated regularly.

Also read these articles:
https://support.microsoft.com/en-us/help/3004394/support-for-urgent-trusted-root-updates-for-windows-root-certificate-p
http://woshub.com/updating-trusted-root-certificates-in-windows-10/

If you're going to run outdated operating systems, you need to get educated on how to fix issues.

I'm curious - where did you get the text for the error message in Vivaldi from?

kimoo

@Pathduck i very well can fix the OS issues , i use computer from windows 95 till now , but the mentioned problem first time happened to me , and i was know it's certificate problem , but my wonders was only why this happened only from 5 days ! may be it's somethings linked with my router or my ISP