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Why Did My CSR Get Rejected

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How to Generate a Certificate Signing Request (CSR) in Cisco ASA 5500 SSL VPN/Firewall?

Updated on March 2, 2026
891 people found this helpful
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.

Updated on October 20, 2025
899 people found this helpful
How-to-fix-keyset-does-not-exist-keyset-Not-defined-for-Entrust-Document-Signing-certificates

How to renew a SCEP RA certificate (private CA – device certificate)

Updated on January 2, 2025
884 people found this helpful
This article will help you to renew a SCEP RA certificate

Sectigo Chain Hierarchy and Intermediate Roots

Updated on October 11, 2024
50853 people found this helpful
Overview Sectigo’s public roots are as widely trusted as any other in the industry. In fact, Sectigo’s root ubiquity is well in excess of 99.99% of systems in use today and is 100% for modern browsers, mobile devices, and operating systems.

Fixing the VBA Macro Digital Signature Error

Updated on September 4, 2026
788 people found this helpful
Why signing a Visual Basic for Applications (VBA) macro with a code signing certificate on a SafeNet token fails with a digital certificate error, and the registry change that resolves it.

What is private key?

Updated on August 10, 2026
1142 people found this helpful
Private Key overview and Protection Process

Resolving "Unable to decrypt message" in Outlook (S/MIME interoperability with Gmail)

Updated on July 18, 2026
166 people found this helpful
This article explains how to resolve the "Unable to decrypt message" error that Gmail recipients see when they open S/MIME-signed or encrypted email sent from Microsoft Outlook. It covers the certificate and cryptographic-algorithm causes and the Outlook settings that fix them.

Troubleshooting: USB Token/Smart Card Not Working on Windows Server 2022 (Switch Driver from UMDF2 to WUDF)

Updated on July 18, 2026
180 people found this helpful
This article explains how to switch the smart card reader driver so a USB token is detected and its certificate is accessible in SafeNet on Windows Server 2022.

Troubleshooting: "Your Digital ID Name Cannot Be Found" error in Outlook

Updated on July 13, 2026
501 people found this helpful
This article explains how to resolve the Microsoft Outlook error "Your Digital ID name cannot be found by the underlying security system," which stops encrypted email from opening. It covers the usual causes and three step-by-step fixes.

How to add a CAA record to authorize Sectigo to issue certificates for your domain

Updated on July 13, 2026
2032 people found this helpful
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.

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