Title: Windows Update error 8024402C caused by April Rollup
Applies to: Windows 7 and Windows Server 2008
The April Rollups (Security Only or Full) break Windows Update such that Windows Update fails with error code 8024402C when trying to install additional updates.
Furthermore, the April Rollups hang when uninstalling. The only solution is to wait 5 minutes, then either manually reboot your computer or kill power to your Windows Computer. Upon reboot, choose to start Windows Normally. Windows will then reinstall several Registry/Machine entries, then finish uninstalling the April Rollup, then Windows will reboot your computer again after configuring your computer to complete the removal of the badly botched April Rollup. Finally, after all of this, the April Rollup will be fully uninstalled, Windows will boot normally, and Windows Update will once again work correctly.