Error 0x88010002

Value: -2013200382 | 0x88010002 | 2281766914

What does it mean ?

WEP_E_FIXED_DATA_NOT_SUPPORTED  
This computer is not fully encrypted. There are fixed volumes present which are not supported for encryption.
Value: 2 | 0x0002 | 0b0000000000000010

Where does it come from ?

FACILITY_WEP  
WEP Encryption (Wired Equivalent Privacy)
Value: 2049 | 0x801 | 0b100000000001

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