![Fortinet, Shopify and more report issues after root CA certificate from Lets Encrypt expires | ZDNet Fortinet, Shopify and more report issues after root CA certificate from Lets Encrypt expires | ZDNet](https://www.zdnet.com/a/img/resize/93cf1438eba88ed64df9affcb09768636303013d/2021/10/01/cbc8095c-5bdf-41c5-b688-90c271c0f14d/https-ssl-certificate-lock.png?width=1200&height=1200&fit=crop&auto=webp)
Fortinet, Shopify and more report issues after root CA certificate from Lets Encrypt expires | ZDNet
![Unable to resolve "unable to get local issuer certificate" using git on Windows with self-signed certificate - Stack Overflow Unable to resolve "unable to get local issuer certificate" using git on Windows with self-signed certificate - Stack Overflow](https://i.stack.imgur.com/zn1Uk.png)
Unable to resolve "unable to get local issuer certificate" using git on Windows with self-signed certificate - Stack Overflow
GitHub - smallstep/certificates: 🛡️ A private certificate authority (X.509 & SSH) & ACME server for secure automated certificate management, so you can use TLS everywhere & SSO for SSH.
![Design of system based on HTTPS, Client Certificates and custom CA - Information Security Stack Exchange Design of system based on HTTPS, Client Certificates and custom CA - Information Security Stack Exchange](https://i.stack.imgur.com/Nixp5.jpg)