Upgrade from previous versions of Cloud Director and having a set of allowed SSL Ciphers defined, they may be incompatible after upgrade.
Cloud Director 10.6.1
When upgrading Cloud Director some SSL Ciphers may be removed leaving no Matching SSL Ciphers between the Load Balancer and Cloud Director UI.
The main point is to create a list of allowed SSL Ciphers that are common between the Load Balancer and the Cloud Director UI.