Upgrade VirtualCenter 2.x to vCenter Server 4.0

* Download the vCenter Server 4.0 update package with all the modules from: http://downloads.vmware.com/d/details/vc40u1/ZHcqYmQlcCpiZGVqZA==

Note: You will need a valid vmware login to download the package.

* The package name was VMware-VIMSetup-all-162902.zip

* Unzip the package

* BACKUP YOUR EXISTING VirtualCenter 2.x database first!!!

* Double click the autorun.exe in the extracted folder.

* Followed the upgrade instructions. ¬†We didn’t run into any trouble with the upgrade.