What is Certificate Transparency Required Error?
It is one of the SSL errors which occurs when a user is trying to visit a secure website that is having SSL certificate errors and which creates the problem of connection between a user device and the remote server.
The main reason for “Certificate Transparency Required Error” are as followed:
The Certificate Authority hasn’t entered the website’s SSL Certificate to the
Certificate Transparency log which may lead to fraud or negligence on the part of the Certificate Authority (CA’s).
The owner of the website itself has notified the Certificate Authority not to enter the domain or any sub-domains to transparency log in order to keep certificate information private.
Certificate Transparency (CT) Implementation
In March 2013, Google officially launched the first certificate transparency log. After a few months, Digi Cert became the first Certificate Authority (CA) to implement Certificate Transparency. Thereafter it was made compulsory to log the details of the issued SSL certificate in a CT log.
Certificate Transparency (CT) is an internet security standard that mandates the practice of maintaining public logs of all the digital certificates that are issued by trusted certificate authorities (CAs).
Steps for how to Fix ERR_CERTIFICATE_TRANSPARENCY_REQUIRED Error
Solution for Website Owner
This is the only way through which this error can be resolved. The website owner needs to contact the Certificate Authority (CA) and inform about this issue. Tell them to add the website’s SSL Certificate to the CT log.
Also check with the CA’s, regarding if there are any technical errors on CA’s behalf. If so, then reissue the SSL Certificate and reinstall it on your website. I know sometimes install an SSL certificate is altogether a new challenge. There is an option to go for the Free SSL Installation on C-Panel and install the certificate without any hassle.
If you still don’t get any proper response from your Certificate Authority (CA), then it is recommended to change your exiting CA with the reputed one like Digi Cert, Rapid SSL, Sectigo (Formerly Comodo), Geo Trust, etc.
Learn more on how to Fix Certificate Transparency Error on Website Browser.