I can confirm that the same works for Office 2010 Home and Student (Office 14.0) versions
Office 14 does not have a 'ClickToRun' key so it needs to be added.
Navigate to Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\14.0\ Add a new registry key (Right click; New key) called ClickToRun
Add a DWORD to you newly added key path Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\14.0\ClickToRun) (Right click; New DWORD) called UpgradeAdvertised and set it to 1 as mentioned.
So in summary, when complete, you will end up with a new key called : Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\14.0\ClickToRun that contains a REG_DWORD called UpgradeAdvertised with a value of 1. (See Pic)
Disclaimers apply. Don't run Regedit unless you know what you are doing.
BTW: Does anyone know what "MS will remove the backup install from their site" even means ?
