While upgrading UIM server from 8.51 to 9.0.2 it fails with the following error in installation log.
ERROR impl.UIMServerUpgradePreparationPanel$UpgradePreparationSwingWorkerThread:doInBackground:278 [SwingWorker-pool-1-thread-2] - Exception caught during validation checks. (2) communication error, Failed to communicate with UIM Server instance for upgrade. Reinsert administrator password and if error persists an uninstall and re-install of the product is required.: Failed to log into UIMServer at host 'xxx.xxx.xxx.xxx' after '5' attempts.
Environment
Release: Component: UIMINS
Resolution
Disabling Local IP Validation on primary hub will solve the issue.
1.open controller probe GUI from UIM primary hub robot 2.go to Setup->IP 3.uncheck Local IP Validation 4.try upgrade