Error 0x80280039

Value: -2144862151 | 0x80280039 | 2150105145

What does it mean ?

TPM_E_REQUIRES_SIGN  
The operation requires a signed command.
Value: 57 | 0x0039 | 0b0000000000111001

Where does it come from ?

FACILITY_INK  
Microsoft Tablet PC
Value: 40 | 0x028 | 0b00101000

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