vCenter Server 5.5 installation/upgrade stuck at Orchestrator installation screen

Last day when I was re-installing vCenter server in our test environment, came across this issue where vCenter install process stuck at Orchestrator installation screen for indefinite time (waited for around two hour). 

Initially I thought there might be something wrong with my machine as I had not rebooted the system after vCenter uninstall so I clicked on cancel to end the installation without success then I had to kill the installation process from task manager.
Once the installation terminated, I uninstalled the SSO, inventory service and Orchestrator (yes it was there in add remove program) and rebooted the system. After reboot installed SSO, inventory service and then initiated the vCenter installation again but to my surprise, vCenter installation stuck on same Installing Orchestrator screen again. Then I started Googling about this issue and found a VMware KB article about the same.
As per KB# 2051216,

This is a known issue affecting vCenter Server 5.1 Update 1 and vCenter Server 5.5

To work around this issue:

1. In the Windows Task Manager, locate the vRealize Orchestrator (formerly known as VMware vCenter Orchestrator) processes. For example, you may see processes similar to:
   
   vCenterOrchestrator.exe *32 InstallAnywhere Self-Extractor
   vCenterOrchestrator.exe *32 LaunchAnywhere
2. End the process tree for the vCenterOrchestrator.exe *32 LaunchAnywhere process.
   
   The vCenter Server installer should now complete successfully.

Note: If you are a user of vRealize Orchestrator (formerly known as VMware vCenter Orchestrator), you can complete the configuration manually through the vRealize Orchestrator configuration service.

Related KB article# 2045613.

That's it... :)