The steps are different depending on whether you're running Windows 10 or Windows 11:
Windows 10 Instructions
Follow these steps to run Windows Update Assistant:
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Visit https://www.microsoft.com/en-us/software-download/Windows10
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In the section titled "Windows 10 Update", click Update Now
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The Windows 10 Update Assistant will download to your downloads folder. Double-click this file to install
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You'll be prompted for a username and password, enter .\admin as the username and your admin password
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If you don't know your admin password, contact the Help Desk to have it reset
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When the Windows 10 Update Assistant launches, click Update Now
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It will run a compatibility check. If your computer is listed as not compatible, please send the information in the window to the Help Desk.
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You can continue to work while the assistant is running
NOTE: The update may seem to get stuck between 70% and 90% complete. It will eventually move on.
If you see this window, STOP!

Your computer is missing some required Windows Updates.
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Click the X in the upper right of the message box to cancel the update
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Select Cancel or Close in any additional message boxes until the Windows 10 Setup stops running
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Follow the Windows 10 Update Process again
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When you get to Step 4, click the link to Check Online for Updates from Microsoft
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Click the link to View Optional Updates and apply all of the available Optional Updates

Windows 11 Instructions
Follow these steps to run Windows 11 Installation Assistant:
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Visit https://www.microsoft.com/software-download/Windows11
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In the section titled "Windows 11 Installation Assistant", click Download Now
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The Windows 11 Installation Assistant will download to your downloads folder. Double-click this file to install
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You'll be prompted for a username and password, enter .\admin as the username and your admin password
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If you don't know your admin password, contact the Help Desk to have it reset
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When the Windows 11 Installation Assistant launches, click the link to download PC Health Check app
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The PC Health Check app will download to your downloads folder (the file name will be WindowsPCHealthCheckSetup.msi)
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Double-click the WindowsPCHealthCheckSetup file to install and run the PC Health Check app
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Click Check Now

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When you see the Window "Your Organization manages updates on this pc" click the X to close the Window

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Return to the Windows 11 Installation Assistant and click Refresh
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You can continue to work while the assistant is running
NOTE: The update may seem to get stuck between 70% and 90% complete. It will eventually move on.