On Windows, I followed a specific procedure and successfully loaded the CA (Certificate Authority) certificate into the system's certificate store. This allowed Opera to establish a secure connection without any errors or security warnings.

However, when I replicated the same procedure on Ubuntu, despite correctly importing the CA certificate into the system, Opera fails to obtain the CA and I continue to receive a security error when trying to connect to the local Apache server.

I have verified that the CA certificate used on Windows is identical to the one imported on Ubuntu. Furthermore, I ensured that the certificate was properly placed in the appropriate certificate store on Ubuntu.

Hello Opera community,

I am a university student currently working on a project, and I have encountered an issue with the Opera browser (version 98.0.4759.39) on my Windows system. I have disabled the Opera Root Store and imported a self-generated root certificate authority (CA) into my system's certificate store. However, when I try to connect to my local Apache server, which uses a certificate signed by my self-created CA, I receive a security error.
Interestingly, when I import the root certificate directly through the Opera browser settings instead of using the system's certificate store, everything works as expected and I am able to connect to the local Apache server without any security errors.

I am curious to know why importing the certificate through the browser settings resolves the issue while importing it into the system's certificate store does not. Has anyone else encountered a similar problem, or does anyone have suggestions on how to ensure that Opera correctly recognizes certificates imported into the system's certificate store?

Thank you for your time and help.