NET::ERR_CERT_DATE_INVALID on Windows 7

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Customers on Windows 7 are getting NET::ERR_CERT_DATE_INVALID on Chrome (Firefox works fine). All the other users have no issues

My domain is: allinclusivecrm.com

I ran this command: certbot renew

It produced this output: OK

My web server is (include version): nginx/1.18.0

The operating system my web server runs on is (include version): Ubuntu 20.04.1 LTS

My hosting provider, if applicable, is: AWS

I can login to a root shell on my machine (yes or no, or I don't know): yes

I'm using a control panel to manage my site (no, or provide the name and version of the control panel): no

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot): 0.40.0

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You may want to refer to this thread:

It appears that (at least some) Windows 7 systems don't have the Let's Encrypt root (ISRG Root X1) installed, or if installed it isn't working properly there. But unless you somehow have a special support contract with Microsoft for your old Windows 7 systems to try to see if they have some automatic trust store update that can be enabled, I don't think there's much you can do other than have the users manually install the trusted root.

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And @uaoleg, welcome to the LE community forum :slight_smile:

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