Recently I upgraded a vSphere 7 environment to version 8. This left me with a vCLM baseline which was no longer applicable to any of the ESXi hosts. However I could not delete it. The option to detach the baseline from the cluster was grayed out. The baseline itself shows it was intended to install a host extension for NSX-V. And the option to remove the baseline entirely is also grayed out. This post describes the underlying issue and how to resolve it.