The spam email that comes with the latest version of Windows 10 will have the following message: The software update you are about to install may be required to continue using this software update.
You may need to restart your computer to complete the installation.
To complete the install, follow the instructions below.
To uninstall an update: To uninstall a software update, click the “uninstall” icon in the notification area of the software update window.
Click “Close” to close the uninstaller window.
To install the software upgrade to the latest supported version, click “Install” on the left-hand side of the update installer.
Follow the onscreen instructions to complete installation of the latest software version.
To remove the software patch, click on the “remove” button at the bottom of the screen.
To reinstall the software, click and hold the “R” key and click “Restore,” then select “Yes” when prompted.
To return to the main Windows Update page, click Windows Update.
You can also find more information on the Microsoft support site.