Having looked into doing this I don't believe this is even possible due to lack of free space on my small 64GB SSD. From what I've read elsewhere http://www.eightforums.com/tutorials/26095-repair-install-windows-8-a.html you need at least 8.87 GB + what is currently being used of free space on the hard drive/partition that Windows 8 is installed on to be able to do it. My Windows folder alone is now 34.4GB so even if I moved all my installed programs, program data, users to another drive it would still not be possible to do it and that would sort of defeat the object of having an SSD in the first place. As it stands I'm in a continual fight for free space having only ~10-12GB free (the page file, Music, Documents, Pictures & Videos have already been moved to other drives and system protection has been turned off). In my case the Update History clearly shows this update as being successfully installed on 12 separate occasions (with Failed showing 3 times) but it just does not show up in the Installed Updates section at all. Do you think it's worth having a look at the link NoelC posted above re resetting Windows Update components?