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Step 1. Open Windows Update by clicking the Start button .
In the search box, type Update, and then, in the list of
results, click Windows Update.

Step 2. If prompted to “Restart your computer to install
important updates” click the Restart now button.
Start over at step 1 to make certain all available
updates have been installed.

Step 3. In the left pane, click Check for updates, and
then wait while Windows looks for the latest updates
for your computer.