Even after updating the Machine SSL certificate, a "Certificate Status" alarm is displayed in the vSphere Client.
vCenter Server 7.0
vCenter Server 8.0
After updating the certificate, navigate to the vSphere Client's vCenter Server inventory > Monitoring > Issues and Alarms. Select the "Certificate Status" alarm and click Reset to Green. Verify that the alarm does not occur again.
Reset Triggered Event Alarms
https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/8-0/vsphere-monitoring-and-performance-8-0/monitoring-events-and-alarms/reset-triggered-event-alarms.html