Reiner Saddey’s Place

Microsoft Update may clog your CPU at 100% on boot starting Apr 11, 2007

Posted on April 12th, 2007 by Reiner.
Categories: English, Computers.

There have been reports, that Microsoft Update (not Windows Update) may clog your CPU for some time after booting your PC.

On my system wuauclt.exe keeps one of its CPUs busy at 100% for about 12 minutes.

See Alex met SVCHOST, where Wim describes a work-around:

1. Disable Automatic Updates on the computer
2. Go to http://update.microsoft.com/, choose “Change Settings”, select “To stop using Microsoft Update” at the bottom of the page and then check the box “Disable Microsoft Update software and let me use Windows Update only”
3. Re-enable Automatic Updates

Updates:

06-May-07: The problem has been fixed, but I suggest to wait until the fix will be distributed automatically starting about 22-May-07. Threafter - in June - you should then switch back from Windows Update to Microsoft Update. Technical info from Les Connor at WSUS v2 client and high CPU fix.

01-May-07: The problem appears not to have been solved yet. See SVChost performance issues — hold on just a smidge longer.

12-Apr-07: Glad a real guru (Bradley from The SBS Diva Blog) backs this somewhat bleak work-around: SVChost and flipping back to Windows Update  

Microsoft may be aware of the problem and is preparing hot-fixes. See

• http://support.microsoft.com/kb/932494 
• http://support.microsoft.com/kb/927891/

There’s a post that gives some details at Windows Update / Microsoft Update / svchost / Autoupdate / 100% CPU - Patrick Hopp

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