Knowledge Base

This guide provides the step-by-step process for uploading a custom SSL certificate to Cloudflare and ensuring it is properly bound to your domain. This enables Cloudflare to serve your certificate at the edge and ensures secure HTTPS connections.

This guide provides the step-by-step process for creating a self-signed certificate with a validity period of at least 25 years for signing Android Package Kit (APK) files. This ensures compliance with Android’s signing requirements

This guide provides detailed instructions for installing SSL/TLS certificates in Microsoft Exchange 2019 to ensure secure communication between clients and the Exchange server. It covers the entire process, including importing Certificate Authority (CA) certificates using the Microsoft Management Console (MMC) and installing the server certificate through the Exchange Management Shell.

Learn how to generate a Certificate Signing Request (CSR) on macOS, complete email verification, and export your SSL/TLS certificate in PKCS12 format using OpenSSL and the Sectigo portal.

Create a Certificate Signing Request (CSR) in Microsoft Exchange Server 2019 with ease. Follow this guide for prerequisites, shell commands, and CSR file retrieval.

Learn how to securely sign PDF documents in Bluebeam Revu with a step-by-step guide. Includes prerequisites, digital ID setup, signature field creation, and authentication for compliance and document integrity.

Learn how to achieve DMARC compliance for Verified Mark Certificates (VMC). This guide explains DMARC, its importance for email security, and step-by-step instructions for configuring SPF, DKIM, and DMARC records.

Learn how to resolve SSL/TLS certificate errors caused by incomplete chains. Understand why intermediate certificates matter, how to verify your chain, and best practices for secure configurations.

Learn how to securely sign Microsoft Word documents using a digital signature and a document signing certificate. This step-by-step guide ensures authenticity, accountability, and integrity for official or sensitive files.

Learn why public SSL certificates cannot be issued for internal IP addresses or hostnames and explore secure alternatives like private CAs and Sectigo Private PKI solutions for internal systems.