Web Security

Sectigo Intermediate Certificate Installation Guide

Where to get Sectigo intermediate certificates and how to install them on Microsoft IIS web server When your certificate authority (CA) of choice completes their SSL certificate validation process, they will send you the bundle of four or five files with *.crt extensions. The Sectigo CA certificate bundle will contain: One SSL certificate in Yourdomain.crt format One Sectigo Root certificate (for example, AddTrustExternalCARoot.crt) Two or three Sectigo intermediate certificates (for example: Intermediate CA SectigoUTNSGCCA.crt, UTNAddTrustSGCCA.crt, etc.) Alternatively, you can download the CA Bundle from the below table. PositivesSSL/EssentialSSL/Wildcard SHA-2 DV Continue Reading

How to Install Email Certificate in Outlook

Email signing certificates (also known as S/MIME certificates) are used to digitally sign and encrypt the email messages that you send from your mailbox. Not only do these certificates ensure confidentiality but also determine the integrity of the messages. Only the intended recipient can decrypt and read the mail and ascertain that it hasn’t been tampered with by an attacker on the network. Let’s see how to install a certificate for sending out an encrypted email in Outlook. Prerequisites 1. Your email signing certificate Download and save the PKCS#12 file Continue Reading

How to Solve the Invalid SSL /TLS Certificate Issue

Would you walk into a store that looks like a front for some illegal business? Probably not, at least hopefully not. Welcome to the 21st century, where websites are the virtual storefronts. Most security-aware netizens won’t visit a website if it comes with ‘Not Secure’ written all over in red. Unless you are a cybercriminal (or a terrible businessman), your target audience is probably broader than gullible users, who ignore security warnings and waltz into your website. It is, therefore, in the best interest of users as well as website Continue Reading


If you’re a website owner, the browser throwing an SSL certificate error message such as “ERR_SSL_VERSION_OR_CIPHER_MISMATCH” [CC1] does not help your business. It also doesn’t help to boost the confidence of your end-users, especially in the current cyber landscape. What ERR_SSL_VERSION_OR_CIPHER_MISMATCH Means When a user receives this error message while trying to access your site, it means that your server and the visitor’s browser (client) are unable to establish a secure, encrypted connection due to an unsupported protocol. There are a few potential causes for this, but it’s typically because your Continue Reading

Website Visitors’ Guide on How to Fix the ‘Warning: Potential Security Risk Ahead’ Error in Firefox

SEC_ERROR_EXPIRED_CERTIFICATE MOZILLA_PKIX_ERROR_SELF_SIGNED_CERT SEC_ERROR_REVOKED_CERTIFICATE If you’re seeing any of the above security warnings while visiting a website on the Mozilla Firefox browser, this article will guide you through seven ways you can still use the site despite receiving any of these error messages. However, there are some things you should know before applying these tricks: This article is intended for website visitors. If you’re a website owner, please click on the particular error message above you are seeing for your website and follow the different set of steps mentioned in those Continue Reading

How to Fix the “SEC_ERROR_EXPIRED_CERTIFICATE” Error in Mozilla Firefox and Google Chrome

If you’re seeing a “SEC_ERROR_EXPIRED_CERTIFICATE” error while browsing any website, you’re not alone! This is a common error that’s associated with a website’s Secure Socket Layer (SSL) certificate. Website owners install an SSL certificate to secure the data that transfers between a website visitor’s browser and website’s server. SSL certificates are issued for a maximum of two years, and they must be renewed before or at the time of its expiry date. If the SSL certificate is not renewed, all web browsers will display the SEC_ERROR_EXPIRED_CERTIFICATE error for that site. Continue Reading

Fix the “SEC_ERROR_REVOKED_CERTIFICATE” Error in Mozilla Firefox

If you’re seeing a “Secure Connection Failed’ page with the error message “SEC_ERROR_REVOKED_CERTIFICATE” while visiting a website, use the following steps to get rid of the error page and access the website. Why Firefox Shows the “SEC_ERROR_REVOKED_CERTIFICATE” Error Simply put, this is an SSL certificate related error. The website owner installs a digital certificate called security socket layer (SSL) certificate to protect their website visitors’ data. Every SSL certificate facilitates a secure connection through the use of a public and private key share. When this SSL certificate gets revoked for Continue Reading


How to Get Rid of ‘Warning: Potential Security Risk Ahead with MOZILLA_PKIX_ERROR_SELF_SIGNED_CERT” Error in Firefox? If you see the error message “MOZILLA_PKIX_ERROR_SELF_SIGNED_CERT” while using FireFox, it means that the browser is encountering an SSL certificate-related error. A website owner installs an SSL/TSL certificate to protect the data transfer between their users’ browsers and website’s server using encryption technology. For an SSL certificate to be trusted by FireFox, it must be issued and signed by the certificate authorities (CAs) that the browser trusts. Before you can install an traditional SSL certificate Continue Reading

How To Generate CSR In cPanel

As soon as you buy an SSL certificate, it doesn’t get automatically get installed and enable HTTPS on your website. There are several steps you need to take from your end to complete this process.   There are 3 steps you need to follow after purchasing an SSL.:  Certificate Signing Request (CSR) generation  Validation process  Installation Process   In this article we’ll cover the CSR generation process for cPanel in 3 easy steps. If you’re using different server, refer our articles for CSR generation on various types of servers.   CSR Generation In cPanel Step 1 Log into cPanel Click on Continue Reading

Comodo SSL vs GoDaddy SSL Certificates Comparison Guide| Compare Price, Technical Features, Warranty, and Extra Perks

With plenty of different certificate authorities, SSL certificate types and features; and ambiguous price difference, anybody can get confused. We’ve been a leader in this business for more than a decade and understand this dilemma. Because you’ve reached this article, we assume that you are doing some healthy market research to choose the right SSL certificate for your website. And we are proud of you for that! To help you with your goal, we at SectigoStore have compared two prominent certificate authorities’ SSL certificates: Comodo SSL vs GoDaddy SSL Certificates   Comodo is a well-respected cybersecurity company, providing computer and internet security Continue Reading