Remove orphaned vCenter Server from SSO domain

After my „little“ homelab outage last year and the delivery of a new SSD I found some time to redeploy the nested cluster quite some time ago. During the preparation to my VCAP-DCV Deploy exam I deployed a second VCSA (vCenter Server Appliance) on my old Intel NUC and joined them to a single SSO domain to learn and try different things in the linked mode setup. That’s the reason why I received the „Could not connect to one or more vCenter Server Systems: https://<vcsaFQDN>:443/sdk“ every time I logged in to the second VCSA. Because I planned to redeploy the nested environment using the same IPs/FQDNs I wanted to make sure the orphaned VCSA is cleanly removed from the SSO configuration. This week one of my customers asked me for help with the same problem.A quick search and I found the following VMware KB article (again): Using the cmsso command to unregister vCenter Server from Single Sign-On (2106736). This time I decided to write a short blog post on the topic.

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