You may need to re-start your computer before it can apply the updates. Not having Office 2013 myself and not running even Office 2010 in 64-bit mode (KB2817493 is only for 64-bit installations), I'm not sure what the issue there is. If you have any addins installed, though, that may be an issue as many Office addins are not 64-bit compliant.
I suspect you have the wrong # for KB17314 probably KB2817314. You could also try downloading & manually installing the updates from an Administrator account.
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Cheers,
Paul Edstein
[Fmr MS MVP - Word]
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