Windows 7 Update update kb2762895 causes windows explorer and taskbar to freeze

My Windows Taskbar and Explorer froze upon reboot after "critical" update... Went to Microsoft site, did a Windows Verification Check, tried to download the same update from the Microsoft site and it said it wasn't a valid update for my computer??? How does that happen? Never happened before??? Should I no longer trust Microsoft to automatically install updates? I'm a newbie here... Take it easy on me:)... Thanks in advance for your responses...:confused:

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