Application error using LogonUserA (advapi32.dll)

[Blacksheep]

Can anyone help me with the following problem :
I'm just trying to have the API call LogonUserA run correctly.
Each run ends up with the following message :
"The instruction at 0x77.. referenced memory at 0xcccc. The memory
could not be written.

I'm using VC++ 6.0 on WIN200.

I've tried both way of linking with advapi32.dll, I mean at load time
and dynamically at run time, both crash.
A call to GetUserNameA just before works fine.
GetUserNameA ((LPTSTR)UserName, &lzSize);


Just after I have the following :
UserValid = LogonUserA((LPTSTR)UserName,
lpszDomain,(LPTSTR)UserPasswd,dwLogonType,dwLogonProvider, phToken
);


Has anyone experienced a similar problem ? Any idea or suggestion
welcome


(e-mail address removed)

 

[White Wolf]

Can anyone help me with the following problem :
I'm just trying to have the API call LogonUserA run correctly.

[SNIP]

Please read this: http://www.slack.net/~shiva/welcome.txt