Error 0x80420101

Value: -2143158015 | 0x80420101 | 2151809281

What does it mean ?

EAP_E_USER_CERT_INVALID  
The user certificate being used for authentication does not have a proper extended key usage (EKU) set.
Value: 257 | 0x0101 | 0b0000000100000001

Where does it come from ?

FACILITY_EAP  
Extensible Authentication Protocol
Value: 66 | 0x042 | 0b01000010

Other Errors for FACILITY_EAP