Knowledge Base

"ASN Bad tag value" or "Cannot find certificate request associated with the certificate" error on the IIS7 server Upon importing certificate into the IIS7 server, you may sometimes get an error called: “Cannot find the cert… "Modulus Mismatch" error Modulus mismatch error occurs when a Private key generated along with the CSR code does not match the certifi… "Warning: The CA certificates does not sign certificate" in Plesk Most often this warning occurs with the installation of Comodo domain-validated certificates in Plesk, such a… Hardening SSL/TLS configuration on IIS 8.5 Do you consider your website secure after installing an SSL certificate on it? Well, a website with an SSL ce… How can I install more than one certificate on one IP address? Usually SSL certificate installation requires a dedicated IP address to be assigned to your domain name. This… How do I check my certificate was installed correctly? To be sure that the Certificate has been installed correctly and working properly, as well as that your custo… How do I create a PEM file from the certificates I received from you? PEM is a widely used encoding format for security certificates. Syntax and content is defined by X.509 v3 sta… How to check CA Chain installation? Certificate Authority (CA) Chain, can be also referred to as CA bundle, is a set of intermediate and root cer… How to convert certificates into different formats using OpenSSL Different servers and control panels may require SSL certificates in different file formats. In order to conv… How to export the certificates between Windows servers Moving an SSL certificate from one Windows server to another is possible by exporting a PFX file from one ser… How to import intermediate and root certificates via MMC If your Microsoft Windows server lacks intermediate or root certificates to establish a complete certificate… How to move a certificate between Apache web servers It often happens that one SSL certificate is used on multiple servers. This is quite a common practice for Wi… I can't open my certificate with a double click Once you finish the validation process of the SSL Certificate, you should receive the Certificate from the Ce… I want to install my certificate on several servers. Is it possible? Is there an additional fee? If you are going to purchase an SSL Certificate that should be installed in the future on several servers, yo… What is CA bundle? CA bundle is a file that contains root and intermediate certificates. The certificate issued for your domain…