NSX manager node upgrade is not starting

Products

VMware NSX

Issue/Introduction

NSX manager upgrade from 3.2.3 to 4.2.3 is not starting
The upgrade-coordinator.log reports that the upgrade is paused and the MP upgrade has not started.

2025-10-16T02:08:59.381Z INFO http-nio-127.0.0.1-7442-exec-5 UpgradeCoordinatorFacadeImpl 175467 SYSTEM [nsx@6876 comp="nsx-manager" level="INFO" subcomp="upgrade-coordinator"] Got upgrade status summary overallUpgradeStatus: PAUSED
2025-10-16T02:08:59.382Z INFO http-nio-127.0.0.1-7442-exec-5 UpgradeCoordinatorFacadeImpl 175467 SYSTEM [nsx@6876 comp="nsx-manager" level="INFO" subcomp="upgrade-coordinator"] Component: EDGE, status: SUCCESS, % complete: 100.0, details: nul l, canSkip: true
2025-10-16T02:08:59.382Z INFO http-nio-127.0.0.1-7442-exec-5 UpgradeCoordinatorFacadeImpl 175467 SYSTEM [nsx@6876 comp="nsx-manager" level="INFO" subcomp="upgrade-coordinator"] Component: HOST, status: SUCCESS, % complete: 100.0, details: null, canSkip: true
2025-10-16T02:08:59.382Z INFO http-nio-127.0.0.1-7442-exec-5 UpgradeCoordinatorFacadeImpl 175467 SYSTEM [nsx@6876 comp="nsx-manager" level="INFO" subcomp="upgrade-coordinator"] Component: MP, status: NOT_STARTED, % complete: 0.0, details: null, canSkip: false
When mandatory prechecks are run, the NSX Manager executes several tasks, each printing start and end logs. However, for the backup task, there was no end log, indicating that the backup task encountered an issue
Running grep "Executing check" /var/log/upgrade-coordinator/upgrade-coordinator* command in the NSX manager node confirms that the backup operation check has started.

upgrade-coordinator-1.log:2025-10-21T23:16:34.278Z INFO pool-49-thread-1 UpgradeServiceImpl 2845 SYSTEM [nsx@6876 comp="nsx-manager" level="INFO" subcomp="upgrade-coordinator"] Executing check Backup Operation Check
upgrade-coordinator-2.log:2025-10-21T23:16:34.278Z INFO pool-49-thread-1 UpgradeServiceImpl 2845 SYSTEM [nsx@6876 comp="nsx-manager" level="INFO" subcomp="upgrade-coordinator"] Executing check Backup Operation Check
When you run grep "Executing cleanUp for check" /var/log/upgrade-coordinator/upgrade-coordinator*, you do not see any entries, which confirms that the task did not complete.

Environment

VMware NSX

Cause

This issue occurs because the mandatory pre-check in NSX does not complete as the backup API is not responding.

Resolution

To resolve the issue, make sure NSX back up is configured correctly and you are able to take backups of the NSX manager successfully.

Additional Information

If the above steps in this KB do not resolve the issue, raise a support ticket with Broadcom support selecting NSX as the product.

Handling Log Bundles for offline review with Broadcom support.