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With the most recent release of the Windows 8.1 update which in the past was considered a 'service pack' , in some instances it will not install. At first it appeared it was only on Dell machines but then it was happening on some servers as well. Finally Microsoft realized it was something that required patching and they have done just that.
Visit this website to learn more and follow the necessary steps depending on your system.
In every instance of this problem that I have encountered with my clients, this page is where I end up downloading the fix from. Note this includes the download link for server, 64 bit and 32 bit versions.
If you are not a tech then most likely you should only be passing this information on to someone that is, that takes care of your computer issues. Contact me if you need further assistance.
