Why Is a Message Indicating that the Certificate Chain Is Incomplete Displayed When I Configure HTTPS on CDN?

When an SSL certificate is used for HTTPS configuration on Content Delivery Network (CDN), if the HTTPS certificate fails to be configured and a message is displayed indicating that the certificate chain is incomplete, perform the following operations to locate and rectify the fault:

Check whether the certificate chain is complete, whether the certificate is added in the format as required, whether all certificates are typed, and whether the certificate sequence is correct.

Ensure that the content of the certificate chain is pasted right below the content of the server certificate.

If the certificate chain is incomplete, complete the certificate chain by referring to How Do I Fix an Incomplete SSL Certificate Chain?

If your SSL certificates were purchased through SCM, you can deploy them to CDN in just a few clicks. You do not have to make the certificate chain manually, and you can stop worrying about such errors. Therefore, you are advised to purchase certificates in SCM.