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Grace DadoyanFlag for United States of America

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Suspicious certificate issue; interfering with Outlook and Windows Update accessing servers

I have NordVPN, and it is giving an error message, "Couldn't establish a secure connection. We couldn't validate this TLS certificate and ensure a secure connection required for NordVPN to run. It looks like your internet traffic might be intercepted.

Issued by: OV VeriSign CA

Issued to: OV VeriSign CA

If you are sure that this certificate belongs to a program that you trust, e.g., an antivirus program, you can trust this certificate for now at your own risk." 


I chose Don't Trust. I went into certificate manager and found the certificate located under Personal and under Trusted Root Certification Authorities. I deleted it from both locations and restarted my computer but they came back and so did the error message. I've run a full Windows Defender scan which found something and resolved it. I ran Malware Bytes which did not find anything. I ran sfc and DISM to repair the image, and both ran successfully.


But something is still wrong because my Outlook won't connect and Windows Update won't run and I am still getting that message from NordVPN about that certificate. How can I fix this issue? I am not very experienced working with certificates. Thank you in advance!

Avatar of jhparizona
jhparizona
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Are you able to get on the Internet while NordVPN is on? Are the dates correct on the certicate? I.e. not expired or dated in future. If the dates or something else is wrong with certicate, I would consider contacting NordVPN.
Avatar of Grace Dadoyan

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Yes I can get on the internet. The dates are valid - from 2/20/2025 to a date in the future. I am not even using NordVPN now. It just happens to be alerting me about the certificate because I have NordVPN on my computer.

When you go to the NordVPN website - do you get a similar error? https://nordvpn.com/servers/


Can you try removing the NordVPN client software, reboot and then install it again? Any change?

I can get to the Nord VPN website link that you posted. I can uninstall and reinstall NordVPN, but my subscription to NordVPN lapsed, and I'm not actually using this software. It just happens to be providing this error message every time I reboot my computer and at the same time I cannot connect to Outlook or Windows Updates, so I assumed the error it is pointing to is the problem.
"Yes I can get on the internet. The dates are valid - from 2/20/2025 to a date in the future. I am not even using NordVPN now. It just happens to be alerting me about the certificate because I have NordVPN on my computer."

I have to take your post literally. You posted 2/20/25. That would make the certificate invalid till 2/20/25.
Oops sorry! That was a typo. The certificate is valid from 2/20/2022 to 5/26/2025.

I'm a bit confused - you don't have a subscription anymore then why leave NordVPN installed?


I would uninstall it and reboot. Do you still get the error message then? If so can you provide a screenshot of that message?

I left NordVPN installed because I might renew my subscription. Maybe I didn't describe the issue clearly. My Outlook will not connect to the Outlook server. The only clue that I have is the error from Nord. I can uninstall Nord but I'm fairly certain that is not what's causing Outlook not to connect or Windows Update not to run.

>> I left NordVPN installed because I might renew my subscription

OK, then maybe disable the NordVPN client for testing, see settings -> network/internet


Could you try a free VPN just to check if you can have Outlook connect? This is one you can try:

https://protonvpn.com/free-vpn/

I stopped the NordVPN services. I do have a SonicWall VPN client that I am currently using to connect to my office. Whether that is running or not, Outlook still won't connect to the server.
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Grace Dadoyan
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