Windows Update Error Code 80243004

The Problem

In an attempt to update my Windows Server 2008 R2 server with Microsoft Visual Studio Team Foundation Server 2010 Service Pack 1 I received the error code:

Some updates were not installed
Failed: 1 update
Error(s) found:
Code 80243004 Windows Update encountered an unknown error.

The Fix

  1. Open the Taskbar Properties (Right-click the Taskbar, then select Properties)
  2. From within the Taskbar tab, click the “Customize…” button
  3. The “Notification Area Icons” window will open. In this window, change the state of the “Always show all icons and notifications on the taskbar” checkbox. In other words, if your checkbox is already selected, then deselect it – likewise, if your checkbox is NOT already selected, then select it. I know this sounds like a weird fix, but I’ve witnessed this fix with my own eyes.
  4. Click the “OK” button
  5. In Windows Update, try to install the update(s) again.