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Click the Start  button. Click Settings . Click Update & security. Click Check for updates. Restart your computer when prompted. Troubleshoot a failed update.
It’s usually at the bottom-left corner of the screen.  Windows periodically checks for updates and installs them automatically. You can still use this method to check for updates that have been released since the last update check ran.  After Windows installs an automatic update, it may prompt you to reboot your computer. If you see a message asking you to reboot (or schedule a reboot), follow the on-screen instructions to do so. It’s toward the bottom of the menu. It’s the option with two curved arrows. It’s at the top of the right panel. Windows will check for updates.  If no updates are available, you’ll see a message that says ″Windows is up to date.″ If updates are available, they’ll download automatically. The progress appears at the top of the right panel below ″Updates available.″ Leave this window open as the update installs so you’ll know whether you need to restart your computer. If you see a message that says ″Restart required″ after running the update tool, you can either reboot now, or schedule a reboot for later.  To reboot now, save anything you’re working on, close all applications, and then click Restart now (on the Windows Update window). To schedule a reboot for later, click Schedule the restart (on the Windows Update window), slide the switch to the On (blue) position, and then select a time you won’t be busy on the computer. If the update fails or you receive an error, try the following troubleshooting steps:  Make sure your computer is connected to the internet. Try restarting the computer and running the update tool again. If the update still fails, return to Settings → Update & Security and click Troubleshoot on the left panel. Click Windows Update under ″Get up and running,″ and then follow the on-screen instructions to fix the problem.