How to fix error 0x80070003 (Windows Update)

Windows Update process stop at about 50% and you get the error code 0x80070003.

Move the mouse cursor over to the upper right side of the screen.
Left-click or tap on the Search feature presented there.
In the search dialog box write the following: Control Panel.
After the search has finished left click or tap on the Control Panel icon.
Left-click or tap in the search box presented in the Control Panel window.
Write in the search box the following: Administrative Tools without the quotes.
Left-click or tap on the Administrative Tools feature.
Now double click on the Services feature.
Note: You might be asked for an administrator account and password in which case you will need to type them in.
In the list that shows you will need to search for Windows Update.
Now right-click or hold tap on the Windows Update service
From the menu that appears left click or tap on the Stop button. You can also select the Restart option.
Reboot your Windows 8, 8.1 or Windows 10 operating system.
Return to the Windows Update Service, left-click on it and select Start.

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