We are getting the following error when we hit the public URL:
Your PC doesn’t trust this website’s security certificate.
Error Code: DLG_FLAGS_INVALID_CA
The root certificate has been already imported in the ca-bundle.crt.
Agent for SharePoint
Even though the root CA certificate is imported, there may be intermediary certificates for the CA that also need to be included. Review the certificate trust chain and make sure all certs are imported in to the ca-bundle.crt.