How To Fix Error Code 80072F78 for Windows Update KB4093118 on Windows 7 64-bit (x64)

For a couple of weeks now, I have been trying to download and install Windows Update KB4093118 (April 2018 Security Monthly Quality Roll-up) on my Windows 7 Professional (64-bit) PC using “Windows Update”.  Every time, it has ended in a “failure” with error code 80072F78.  The failure would always occur during the downloading stage of the update at the 45% downloaded mark.

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