"EligibilityCheck.UnsupportedNsxtConfiguration" error during vLCM image creation or host management

Products

• VMware NSX

Issue/Introduction

• VMware NSX was previously installed on the cluster, but has since been removed.
• In the vCenter UI, when trying to edit or create a vLCM image for the cluster, it fails with the following error:

A general system error occurred: Cannot enable the feature because one or more eligibility conditions were not met.

• Checking the vCenter logs /var/log/vmware/vmware-updatemgr/vum-server/vmware-vum-server-##.log we see the following error:

info vmware-vum-server[14685] [Originator@6876 sub=Telemetry] [TelemetryManager 261] Sending telemetry data: {"@type":"pman_error_report","taskId":"########-3CAE-4F4E-8AA1-############|########-9db4-d941-1764-############","entityId":"########-3CAE-4F4E-8AA1-############|domain-c###","parentTaskId":"","errorMessageId":"com.vmware.vcIntegrity.lifecycle.enablement.EligibilityCheck.UnsupportedNsxtConfiguration","errorMessage":"Transport Node Profile is not configured on the cluster but NSX-T Data Center is installed on the following host(s): <HOSTNAME>","errorTime":"<DATE/TIME>"}

Note: HOSTNAME will have the name of the ESXi host which still has NSX VBIs installed on it.

Environment

VMware NSX

vCenter

Cause

The host, mentioned in the above log entry, did not have the NSX VIBs removed prior to decommissioning the NSX mangers, therefore the VIBs remained on the host, vCenter was unable to confirm if a Transport Node Profile (TNP) was attached (TNP is required for vLCM clusters), as the host still had NSX VIBs installed and this failed, as the NSX managers no longer exist.

Resolution

Use the del nsx steps in the installation guide, for the appropriate NSX version:

VMware NSX 4.2 Uninstall NSX from a Managed Host in a vSphere Cluster

VMware NSX 4.1 Uninstall NSX from a Managed Host in a vSphere Cluster

VMware NSX 4.0 Uninstall NSX from a Managed Host in a vSphere Cluster