To provide a workaround to resolve the issue where upgrade is reported as failed / install skipped in NSX Manager UI.
Symptoms:
All of the below symptoms should have occurred in sequence.
1. SDDC Manager shows failure while upgrading NSX on domains managed via vLCM Images.
2. One of the clusters is marked as upgrade failed in SDDC Manager UI.
3. When upgrade is retried from SDDC Manager UI, it is marked as passed.
4. However the same host cluster is shown as failed/Install_SKIP state in NSX Manager UI.