Regenerate the Cloud Service self-signed SSL certificate or import a CA-signed certificate. After updating the certificate, re-establish the trust by re-pairing all cloud sites.
In VMware Cloud Director Availability 4.3 and later, replacing the Cloud Service certificate invalidates the trust only with the paired cloud sites. Replacing with a CA-signed certificate does not invalidate the trust with the paired on-premises sites and no longer requires re-pairing with on-premises sites.
To re-establish the trust with the cloud sites after replacing the certificate of the Cloud Service, re-pair with them.