Error code 80070663
What I did to remedy this situation with Windows Vista home basic:
Open Windows Explorer and navigate to c:/users/Allusers/Microsoft/Office/data
and rename the opa12.dat file to opa12old.dat
When I restarted Microsoft Office 2007 and attempted to open one of my saved files, it asked me to activate
Microsoft Office. I selected the activate online and shortly thereafter, the program was activate (thank you for activating this copy of Office).
I then attempted to run the 7 updates to Microsoft office I was having problems with and all 7 went through.