How do I turn off Tablet Mode in Windows 10?

From the "Settings" app:

  1. Open "Settings", and click/tap on the "System" icon.

  2. Click/tap on "Tablet Mode" on the left side, and turn off "Make Windows more frielndly when using your device as a tablet" on the right side.

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From the "Action Center":

  1. To Turn On Tablet Mode

    1. Click/tap on the Action Center (Win+A) system icon in the taskbar notification area.

    2. At the bottom of the Action Center, click/tap on the Tablet mode button to toggle it on (blue) or off (gray) for what you want.

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Source Tablet Mode - Turn On or Off in Windows 10