Office update KB981715 will not install

[Domi.nick]

When i am trying to install Office update KB981715 then i am getting error Code 646. I don't know what that means and i haven't came across any error while installing previous updates, any ideas what might be causing it to occur? Help regrading this issue will be appreciated.

[Agilent]

Have you tried installing Update for the 2007 Microsoft Office System (KB981715) manually?? If not then give it a try and see if it is getting installed without any error?? You can download KB981715 from here.

[NavinS]

I have checked out for error Code 646 and have come across below article. You can try out the fix that has been mentioned there for fixing that error, best of luck.
You receive error code: 0x80070646, error code: 646, or error code: 1606 when you use Windows Update or Microsoft Update