"Failed to Start: An error occurred during the initialization" error when trying to access VMware Cloud Director after upgrade or certificates update.

Products

• VMware Cloud Director

Issue/Introduction

• Unable to login to VMware Cloud Director (VCD) UI after upgrade or change of certificates.
  Failed to Start
  "An error occurred during the initialization. Accessing the application through an unsupported public URL or poor connectivity might cause this error." 
• While accessing VCD UI, in the console table of developers tools of the browser we can see the following errors
  GET https://xxx/api/versions net::ERR_CERT_AUTHORITY_INVALID.
• Verify the following KB article did not resolve the Issue-
  Failed to Start: An error occurred during the initialization

Environment

VMware Cloud Director

Cause

There could be two possible reasons for this Issue-

a) Common Name (CN) on the certificate does not match with the VCD https/http address on Public Address page. 
b) Public Address page is blank and does have any https/http address provided.

Resolution

When this Issue appears, VCD UI can be accessed from a Private Window and the following could be done based on the cause-
Go to Provider >Administration> Public Addresses

a) Redeploy the certificate with correct CN to match http/https addresses.
b) If blank, update the correct http/https addresses.

Additional Information

Create and Import CA-Signed SSL Certificates for Your VMware Cloud Director