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wherever I try to access https://superuser.com/ chrome gives me an error that

Your connection is not private. Attackers might be trying to steal your information from superuser.com (for example, passwords, messages, or credit cards). Learn more

NET::ERR_CERT_DATE_INVALID

To get Chrome’s highest level of security, turn on enhanced protection This server could not prove that it is superuser.com; its security certificate is not valid at this time. This may be caused by a misconfiguration or an attacker intercepting your connection.

My system info

I am using windows 7

chrome version 94.0.4606.71 (Official Build) (64-bit)

I don't have any security software or antivirus installed

This error only shown on some websites like superuser,quora etc

what I have tried

Reinstalling

clear data

On firefox there is no issue

Saurabh Dhage
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    This is very wrong. What are your versions of Windows and Chrome? Does it happen with other browsers than Chrome? Do you have installed any security software beside Windows Defender? – harrymc Oct 07 '21 at 13:03
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    Does https://superuser.com/questions/1679135/dst-root-ca-x3-expiration-on-windows7-which-update-i-need-to-install-are-there/1679138#1679138 answer the question? – u1686_grawity Oct 07 '21 at 13:16
  • @harrymc I am using windows 7 and chrome Version 94.0.4606.71 (Official Build) (64-bit). No, I do not have any security software installed. – Saurabh Dhage Oct 07 '21 at 15:00
  • Does is happen with IE or Firefox? – harrymc Oct 07 '21 at 15:06
  • no, on firefox no issue – Saurabh Dhage Oct 07 '21 at 15:08
  • I don't know what went wrong with Chrome, but I suggest to save bookmarks, uninstall it, clean out all its folders and reinstall the latest version. – harrymc Oct 07 '21 at 15:11
  • Check you clock>>>>>https://superuser.com/questions/1679807/chrome-error-invalid-stack-exchange-certificate? – Moab Oct 07 '21 at 15:36
  • This was also covered on the main SE Meta - https://meta.stackexchange.com/questions/370443/invalid-certificate-on-all-se-sites - Let's Encrypt's certificate has expired & you are on an unsupported OS so you don't automatically get a new version. – Tetsujin Oct 07 '21 at 16:08
  • @user1686 yes your answer solved my issue with chrome. i was struggling to solve it for 1 month . thank you :) – Saurabh Dhage Oct 22 '21 at 13:44

1 Answers1

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I use Windows 7 and I had the same problem, same error irrespective of browser. I found it was because I'd disabled the Windows Update service not knowing that by doing so I was preventing a root certificate from being downloaded and installed. I set the Update Service startup type to Automatic, started the service, waited for a few hours then checked and the problem had gone.

Phil Hathaway
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