Updated SSL Certificates for Let's Encrypt

Some old web browsers don't have updated root certificate for sites that use Let's Encrypt SSL. So, those browsers will most likely return security errors or not work at all when visiting websites that are signed with newer certificates.

A potential solution for this issue is to manually install newer Let's Encrypt root certificates.

Let's Encrypt Root Certificates - ISRG Root X1

Self-signed

• PEM format [Certificate (.pem)][Original source]
• DER format [Certificate (.der)][Original source]

Cross-signed by DST Root CA X3

• PEM format [Certificate (.pem)][Original source]
• DER format [Certificate (.der)][Original source]

SHA256 Hashes

• isrg_root_x1.pem : 22b557a27055b33606b6559f37703928d3e4ad79f110b407d04986e1843543d1
• isrg_root_x1.der : 96bcec06264976f37460779acf28c5a7cfe8a3c0aae11a8ffcee05c0bddf08c6
• isrg_root_x1_cs.pem : 95cc1c24329edc615041294538dfb21329930d8dffdcf33136173aa94734a28c
• isrg_root_x1_cs.der : 6d99fb265eb1c5b3744765fcbc648f3cd8e1bffafdc4c2f99b9d47cf7ff1c24f