Error 0x8004400B

Value: -2147205109 | 0x8004400B | 2147762187

What does it mean ?

PEOPLE_IMPORT_E_USERNAME_NOTRESOLVED  
The user account name can not be resolved within the Active Directory. You would need to verify whether the user is a real user or just a temporary user object generated for some application purpose. You might be able to refine the LDAP search filter to avoid this error.
Value: 16395 | 0x400B | 0b0100000000001011

Where does it come from ?

FACILITY_ITF  
COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

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