This is a condition that may occur in VMware NSX for vSphere 6.x.
Note: VMware does not recommend manually de-registering the NSX plug-in .
For more information on removing NSX installation safely, see the
Safely Remove an NSX Installation section in the NSX Installation Guide available in
KB 387787.
To avoid this issue, ensure that you follow these best practices when moving an ESXi host out of the cluster.