KB2479943
Strongly suspect this security update is causing a conflict in USB ports in Win7 64 Home. USB external drive and USB Cisco Valet Connector are not recognized. Anyone else having this problem?
March 14th, 2011 5:24pm

this security update updates the MPEG2 codecs and has nothing to do with USB. Have you installed the Sp1 over Windows Update? If yes, you may be affected by this bug. run linked 7601USBFix: The Windows 7 SP1 USB Driver Bug (what it is and how to fix it) "A programmer is just a tool which converts caffeine into code" Want to install RSAT on Windows 7 Sp1? Check my HowTo: http://www.msfn.org/board/index.php?showtopic=150221
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March 14th, 2011 8:25pm

Thanks for your help. Your answer seems to fit my problem. However, my problem was resolved by restoring the system to prior KB2479943 installation. I'll give it a few days and see what happens.
March 14th, 2011 8:43pm

I don't understand why this update should cause USB issues. Contact the support: Contact a Support Professional by Email, Online, or Phone"A programmer is just a tool which converts caffeine into code" Want to install RSAT on Windows 7 Sp1? Check my HowTo: http://www.msfn.org/board/index.php?showtopic=150221
Free Windows Admin Tool Kit Click here and download it now
March 15th, 2011 3:37pm

I had issues with this update also, it knocked out my wireless internet connection. But when I restore to a point prior to this update everything is fine. Go figure.
March 15th, 2011 4:58pm

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