FAQs

This guide provides the step-by-step process for generating a Certificate Signing Request (CSR), which is the first step in obtaining an X.509 digital certificate. A CSR contains the public key and identity information required by a Certificate Authority (CA) to issue a certificate. This guide covers three methods: using ASDM, using ASA CLI, and using OpenSSL.

How-to-fix-keyset-does-not-exist-keyset-Not-defined-for-Entrust-Document-Signing-certificates

This article will help you to renew a SCEP RA certificate

The following instructions will guide you through the SSL installation process on Microsoft Exchange 2013.

CAA records let you specify which certificate authorities may issue certificates for your domain. This article explains what a CAA record is and how to add one to authorize Sectigo, including how to resolve CAA check pre-sign failures for SSL/TLS and S/MIME certificates.

This article explains how to install an SSL certificate on a domain hosted on a Linux VPS using the DirectAdmin control panel.

This article explains how to reissue or replace an SSL certificate through the Sectigo portal.

If the private key for your SSL/TLS certificate is compromised, you must revoke the certificate immediately to prevent misuse. This article explains how to revoke the affected certificate and reissue a trusted replacement in the Sectigo portal.

Private Key overview and Protection Process

This guide explains how to diagnose and resolve the issue where VMware Center rejects a SHA‑1 root certificate, preventing proper certificate validation during secure communication.