com.vmware.vim.vmomi.core.exception.CertificateValidationException. Server certificate chain is not trusted and thumbprint verification is not configured.
"Unable to retrieve pairs from extension server at https://hostname:8043. Unable to login to 'HBR Management Server at https://hostname:8043'"
Follow these steps to reconfigure vSphere Replication and Site Recovery Manager and reconnect the sites.
If machine SSL certificate on vCenter is changed post re-configuration of vSphere Replication and Site Recovery Manager sites must be re-connected.
If the issue persists, open the vSphere Replication appliance page in an incognito tab or try clearing the browser cache and then checking the VR configuration.
In case this does not help, please contact Broadcom Support for further investigation and assistance.