NET::ERR_CERT_DATE_INVALID - Opera only problem

[tomatitotarifa]

tomatitotarifa last edited by

Hello
I hope someone can help out with this.

I am gettng the NET::ERR_CERT_DATE_INVALID message in a lot of pages, dozens daily.

It doesn't happen with Firefox, so I suspect it's not an OS problem.

I've tried lots of suggestions found online to no avail.

Help would be much appreciated so I don't have to ditch Opera for Firefox!

Thanks!

[temminckiiii]

temminckiiii @tomatitotarifa last edited by

@tomatitotarifa Maybe this info helps you?
https://eclecticlight.co/2021/09/21/el-capitan-and-older-mac-os-x-are-about-to-have-a-security-certificate-problem/
https://www.eduhk.hk/ocio/content/faq-how-add-root-certificate-mac-os-x
https://letsencrypt.org/certificates/

This topic is discussed in Windows forum (also for Mac):
https://forums.opera.com/topic/51936/your-connection-is-not-private/16

[temminckiiii]

temminckiiii last edited by

Browsers other than Firefox generally use the operating system's facilities to decide which certificate authorities are trusted. Firefox instead had certificate list as part of the browser, but that has changed. Maybe you have an old version of Firefox. https://blog.mozilla.org/security/2021/07/28/making-client-certificates-available-by-default-in-firefox-90/

[tomatitotarifa]

tomatitotarifa @temminckiiii last edited by

@temminckiiii said in NET::ERR_CERT_DATE_INVALID - Opera only problem:

https://letsencrypt.org/certificates/

Thanks for much for replying, I'be been looking at those pages but honestly don't understand how to download the new certificate. If there's a simple answer please tell me otherwise I'll keep looking see if I figure it out.

Thanks again. P.

[tomatitotarifa]

tomatitotarifa @temminckiiii last edited by

@temminckiiii I have also checked the certificates in my KeyChain and none of them are expired.

[tomatitotarifa]

tomatitotarifa @temminckiiii last edited by

@temminckiiii Ok... I've found on this page where to download the file ISRG Root X1 and installed it, hoping this works Thanks again

[temminckiiii]

temminckiiii @tomatitotarifa last edited by

@tomatitotarifa Please let me know if this solved your Opera problem. What version is your Mac?

[tomatitotarifa]

tomatitotarifa @temminckiiii last edited by

@temminckiiii Seems to be working so far! Mac is on 10.11.6. Thanks!

[Mercurial]

Mercurial @temminckiiii last edited by

@temminckiiii said in NET::ERR_CERT_DATE_INVALID - Opera only problem:

https://eclecticlight.co/2021/09/21/el-capitan-and-older-mac-os-x-are-about-to-have-a-security-certificate-problem/

This is perfect, thanks