Google Chrome Blocking All https - Not Secure

[JoBe]

I do not own a Domain.

Google Chrome is blocking every https: -

Your connection is not private

Attackers might be trying to steal your information from www.onthegotours.com (for example, passwords, messages or credit cards). Learn more

NET::ERR_CERT_DATE_INVALID

This server could not prove that it is www.onthegotours.com ; its security certificate is not valid at this time. This may be caused by a misconfiguration or an attacker intercepting your connection.

Proceed to www.onthegotours.com (unsafe)

Google Chrome do not reply to thousands of reports?

Google Chrome Community says I must update the LetsEncrypt certificates on my MacBook or buy a new MacBook? I cannot find any certificates. I believe it is the domain owners who need to act but those I have contacted say their certs are all valid and in date?

Help?

[9peppe]

Check the clock on your computer.

[JoBe]

Yeah, already suggested. I have just found this: -
https://mjtsai.com/blog/2021/09/24/some-web-sites-will-stop-working-with-el-capitan-and-older/

The problem is the root certificate that Let’s Encrypt are currently using, the IdentTrust DST Root CA X3 certificate, has expired. Let's Encrypt need to fix this?

[9peppe]

Ah, ok. That's the issue?

Go on this page and install the self-signed ISRG Root X1 (try different formats, at least one will double-click to install)

Chain of Trust - Let's Encrypt

[9peppe]

You have a second alternative: use Firefox.

Firefox has its own root store, independent of the OS one.

[JoBe]

Firefox's Autofill is rubbish. Barely works. Barely fills even user names let alone addresses, etc..

Firefox offer no support.

I will try your fix. Thank you.

[9peppe]

Autofill? Just use a password manager

[JoBe]

Your fix works for subscribers - this is the website/domain owners? I don't think that works for users?

[9peppe]

It does work for users, and users alone. There is no fix for this on the website side.