Ribbon or Toolbars are missing, blank, disappear in AutoCAD Products

After starting up the AutoCAD or during its use, the ribbon, status bar, or other toolbars are missing, blank, empty, or have disappeared. Also, a message may appear that states that the customization file (*.cuix) cannot be located. Note: The issue can apply to other AutoCAD-based software (i.e: Civil 3D) or any AutoCAD toolset. There can be multiple causes for this issue: Clean Screen is toggled on. The ribbon is turned off, set to autohide, or undocked. Toolbars are turned off

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