Question

Let's Encrypt renewal failing - CERTIFICATE_VERIFY_FAILED

Hello, I’ve just started receiving this message from Lets Encrypt on my droplet when it tries to renew the certificate for my website. This is the full error -

Attempting to renew cert (innoviatech.com) from /etc/letsencrypt/renewal/innoviatech.com.conf produced an unexpected error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:645). Skipping.
All renewal attempts failed. The following certs could not be renewed:
  /etc/letsencrypt/live/innoviatech.com/fullchain.pem (failure)

Not sure what is causing this. The DNS of the domain name still points to the droplet and there’s been no changes to the Apache config. The certificate expires in 9 days so hoping to resolve before then!..

Thanks in advance,

Phil.


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Hi there,

What I could suggest is trying to upgrade your certbot installation to the latest version:

sudo apt update
sudo apt install --only-upgrade certbot

Let me know if this helps!

There seems to have been a similar discussion on the Let’s Encrypt community here:

https://community.letsencrypt.org/t/ssl-certificate-verify-failed-certificate-verify-failed-ssl-c-645/162152

Best, Bobby