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Windows Update Error - 80243004

KB ID 0000643 Dtd 01/08/12

Problem

Seen on Server 2008, when attempting to run Windows update.

Windows Update Error  80243004

Code 80243004 Windows Update encountered an unknown error

Solution

Without a doubt the strangest fix I've ever seen!

1. Right click the Taskbar > Properties > Taskbar Tab > Customize.

Customize Taskbar

2. Tick the box that says "Always show all icons and notifications on the taksbar" > OK.

Show all Icons  and Notifications on the Taskbar

3. Retry your Windows updates.

Related Articles, References, Credits, or External Links

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