Office 2007 SP1 Windowsupdate error 646

I just installed office 2007 on a new machine. 16 windows updates have been downloaded. All have failed.
Read the various posts here. All manually downloaded and installed as an administrator. A Mr. Fixit and everything OK except Office 20007 SP1.
Have tried several times to install this manually followed by Fixit, but still it fails - even in safe mode. Driving me crazy!
Today still received 4 Windows 7 updates, automatically installed without problem.

Please help much apprecited
David

Finally!  It solved!  Found a reference here somewhere that suggested the user account control may be the problem.  Tried to set it off, but it wouldn't work.  Looking for that problem and the article referred to a problem caused by the Office 97, make changes to the registry. It gives a solution I ran, disabled UAC OK, rebooted the machine, and then Windows Update.  Guess what? It worked the first time!  Conclusion: because I first installed Office 97 this machine, and then used a version upgrade to Office 2007, which caused the problem of UAC, which in turn has caused the problem of update.  How dark is it?  In any case, everything is now fine but what a trial!
David

Tags: Windows

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