Error 0x8024044B

Value: -2145123253 | 0x8024044B | 2149844043

What does it mean ?

WU_E_PT_SECURITY_SYSTEM_FAILURE   
A security operation failed in the Windows Web Services framework.
Value: 1099 | 0x044B | 0b0000010001001011

Where does it come from ?

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

Other Errors for FACILITY_WINDOWSUPDATE