avast server certificate not trusted by ios

That gives us quite a specific time for when this certificate will expire: That's converted to BST for me, but if I parse the certificate using OpenSSL X509 you can see the UTC timestamp for expiration: The certificate in here that is going to cause a problem is this one, the IdenTrust DST Root CA X3.Īs you can see, the clock is ticking and we are getting close to the expiration date of 30th Sep 2021 but it's not just an expiration date, it's an expiration timestamp that we call notAfter: These certificates are built into your OS and are generally updated as part of the normal process of updating your OS. Here you can see the list of 'Trusted Root Certificate Authorities' on my current Windows 10 device: Ultimately, all certificates that power HTTPS on the Web are issued by a CA, a trusted organisation recognised by your device/OS. For everyone else, this blog post, and the details I'm going to link to, should be enough to understand what's going to happen and why. This seems like a shameless plug, but if you really want to know more about how Certificate Authorities (CA) and Certificate Chains work, you should consider joining me on the Practical TLS and PKI training course that I deliver which was created by Ivan Ristic, the creator of SSL Labs and author of Bulletproof SSL and TLS. You may or may not need to do anything about this Root CA expiring, but I'm betting a few things will probably break on that day so here's what you need to know!

On 30th September 2021, the root certificate that Let's Encrypt are currently using, the IdentTrust DST Root CA X3 certificate, will expire.

Avast server certificate not trusted by ios