>Hi Hugo, thank you (sorry about my english)
>
>It is what a need but ever returns .f. in NT.(it is not uppercase or lowercase problem) Do you have any sugestion about what is wrong ?
>I send the user, domain and password, identical as i enter thru the keyboard.
>
>Luiz
>
>Obrigado, é exatamente o que eu preciso,porém esta sempre voltanto false no ambiente NT. Eu estou enviando o usuario, dominio e password como se estivesse entrando via teclado (maiusculas e minusculas), porem falha sempre.
>Voce teria alguma sugestão sobre o que pode estar errado ?
>
>Fico-lhe grato
>
>Luiz Kraemer

Luiz, I do not really know what might be not working, I do not have NT to test, just as a wild guess, what happen if add these other constants:

#define LOGON32_PROVIDER_WINNT35 1
#define LOGON32_PROVIDER_WINNT40 2
#define LOGON32_PROVIDER_WINNT50 3

and then replace LOGON32_PROVIDER_DEFAULT with the others (1 at the time) to see what happens. As I said, it is a shot in the dark....