This seems to be a common problem, without a common solution. I cannot install Office 2003, as I encounter "Error 1402". I have looked at some of the solutions recommended and have tried deleting the files, adding permission and starting over, but with no luck. The registry key in question does not appear to exist. It is HKEY_LOCAL_MACHINE\Software\Classes\Software\Microsoft\MasterAggregatorForIPP\MSDAIPP\Providers\... In the regedit, there is nothing showing in the "second" software, and it cannot be opened. Error message: Error while opening key.
Is there a way to resolve this problem? It was also affecting my Norton, but I have not tried to fix this yet.
Thanks in advance.