error C2679

binary ‘+=’ : no operator found which takes a right-hand operand of type ‘BYTE [6]’ (or there is no acceptable conversion)

CString ret;
typedef struct _SID_IDENTIFIER_AUTHORITY {
BYTE Value[6];
} SID_IDENTIFIER_AUTHORITY, *PSID_IDENTIFIER_AUTHORITY;

ret += sid.IdentifierAuthority.Value;

I just “(TCHAR)” to change the value type like this.

ret += (TCHAR)sid.IdentifierAuthority.Value;