Error 0x8031003E

Value: -2144272322 | 0x8031003E | 2150694974

What does it mean ?

FVE_E_KEYFILE_NO_VMK  
The BitLocker encryption key cannot be obtained from the startup key or recovery password. Verify that you have the correct startup key or recovery password and try again.
Value: 62 | 0x003E | 0b0000000000111110

Where does it come from ?

FACILITY_FVE  
Full volume encryption
Value: 49 | 0x031 | 0b00110001

StackOverflow

Other Errors for FACILITY_FVE