Logon failure unknown username or bad password

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I want to copy a file from a pc to a server using impersonate (<username,password>).
When I wrote the follwing code and run it exception was thrown "logon failure unknown username or bad password".
Can anyone help?

C#

using (new Tools.Impersonator(Serv_UName, "",Serv_Pwd))
{
    if (File.Exists(DestFileName))
    {
        MessageBox.Show("already exists in destination");
        return 1;
    }
    else
    {
        File.Copy(Src_FileName, DestFileName, true);
        return 0;
    }
}

Posted 1-Jun-11 21:51pm

Reem Moh

Updated 1-Jun-11 22:00pm

Rob Branaghan

v2

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Rob Branaghan · Answer 1 · 2011-06-01T21:58:00

Solution 1

See the following article

Windows Impersonation using C#[^]

You may need to read up on domains....

http://en.wikipedia.org/wiki/Windows_domain[^]

http://www.networkclue.com/os/Windows/AD/index.aspx[^]

If all else fails

http://www.google.com/search?q=understanding+domains+windows[^]

Posted 1-Jun-11 21:58pm

Rob Branaghan

Updated 1-Jun-11 23:46pm

v3

Comments

Reem Moh 2-Jun-11 4:11am

wt's wrong in my code!!

Rob Branaghan 2-Jun-11 4:24am

Did you have a look at that Article?

Reem Moh 2-Jun-11 4:32am

ys, but i donnow where to place my code that copy file !!

Rob Branaghan 2-Jun-11 4:34am

Try copy and pasting into a new class in your app. Add your applications namespace.
And then try it to see if it works.

Is the computer you are trying to talk to on a domain? because you dont appear to be sending a domain?

Reem Moh 2-Jun-11 4:49am

no domain

Dylan Morley · Answer 2 · 2011-06-01T22:33:00

The error message you are seeing is pretty clear - you haven't provided credentials that it can correctly authenticate with.

You say you are connecting to a server - so what account are you expecting to use to authenticate against the server? A domain account, or a local account on the server?

The arguments you are providing are

Serv_UName, "",Serv_Pwd

What is the middle argument? Is it 'domain'? If so, try the following

Serv_UName, Serv_Name, Serv_Pwd

So if I wanted to connect to a server called SERVER1 with account dmorley, it would read

using (new Tools.Impersonator("dmorley", "SERVER1", "S0mePa55word"))

You need to make sure that the account exists on the server you are connecting to