Error 0x80243FFD

Value: -2145107971 | 0x80243FFD | 2149859325

What does it mean ?

WU_E_NON_UI_MODE  
Unable to show the user interface (UI) when in a non-UI mode; Windows Update (WU) client UI modules may not be installed.
Value: 16381 | 0x3FFD | 0b0011111111111101

Where does it come from ?

FACILITY_WINDOWSUPDATE  
Windows update
Value: 36 | 0x024 | 0b00100100

Other Errors for FACILITY_WINDOWSUPDATE