- Plesk Onyx for Linux
- Advisor is showing that Plesk is not secured:
- In fact an SSL certificate is installed in Tools & Settings > SSL/TLS Certificates> Certificate for securing Plesk:
- CA-chain is not complete for the certificate (that can be checked in the same way as described here or with any online scanner): How to check CA Chain installation?
The problem is the absence of an intermediate CA certificate in CA-bundle when installing a CA certificate in Plesk > Tools & Settings > SSL/TLS Certificates.
The fastest way to resolve the issue
- Login to Plesk
- Go to Tools & Settings > SSL/TLS Certificates > click Add button:
- Fill out the contact information required and make sure that “Private Key”, “Certificate” and “CA certificate” are all uploaded, and the click on the upload certificate button. (Please note that it is very important to upload CA certificate to avoid any issues).
- To select this certificate, please click the [Change] link next to Certificate for securing Plesk section:
- Select the certificate from the drop-down list, and then click OK.
NOTE: If an intermediate CA certificate was not provided by the SSL Certificate provider, please contact the certificate provider and ask for the intermediate CA certificate so you can follow all the steps above.