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Windows 7: Windows Update Error code 8024800A

27 Mar 2013   #11

Windows 8.1 Update x64 Professional

Still no joy. To make matters worse, holding down F8 to prevent Windows starting so that I can do the renaming in DOS has no effect. It's an Asus Ultrabook with an always-on style of system installation.

My System SpecsSystem Spec
27 Mar 2013   #12

Windows 8.1 Update x64 Professional

Finally... I'd been restarting Windows rather than cold booting, but I thought it was worth trying. As soon as I shut down, up came a message saying it was installing 11 updates. Why these weren't being applied before when I restarted, I've no idea.

Booted the PC and checked Windows Update. Two updates: one important and one optional. Selected them both. They were downloaded but failed to install. Message code was 8024402C. Tried again with the same result. Left it for a couple of hours in case it was a Microsoft server error (sometimes happens), then tried once more. This time it all went smoothly.

Why Microsoft couldn't identify the incomplete installs as the initial problem, and why the installs weren't completed during a restart, remains a mystery. However, all is good again.
My System SpecsSystem Spec
28 Mar 2013   #13

Microsoft Community Contributor Award Recipient

Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10

Installs are never started during a restart operation - but are 'forced' during a shutdown.

Thanks for the detail - it's something I'd not considered before!
My System SpecsSystem Spec


 Windows Update Error code 8024800A

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