ProcessStartInfo impersonate other user not working

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Hi all,

I have seen many questions and answers on this subject, however, I can't seem to find the right answer for my situation. I have code that works perfectly as long as I don't set the username, password and domain of the processStartInfo object.

VB

Dim p As New ProcessStartInfo()
            With p
                Dim exec As String = "C:\Program Files\MyFiles\PsExec.exe"
                If File.Exists(exec) Then
                    p.FileName = exec
                    p.Arguments = "\\" & env & " -u username -p password -d icpcl -source """ & source & """ -script " & script
                    p.WindowStyle = ProcessWindowStyle.Hidden
                    p.UseShellExecute = False
                    p.RedirectStandardOutput = True
                    p.RedirectStandardError = True
                    'p.UserName = "myUser"
                    'p.Password = ConvertToSecureString("myPassword")
                    'p.Domain = "myDomain"

                    Dim x As Process = Process.Start(p)
                    Dim output As String = x.StandardOutput.ReadToEnd()
                    Dim err As String = x.StandardError.ReadToEnd()
                    WriteLog("output: " & output)
                    WriteLog("err: " & err)
                    x.WaitForExit()
                End If
            End With

If I uncomment the UserName, Password and Domain lines, I get the following error:

"The directory name is invalid"

If I change

VB

p.FileName = exec

to

VB

p.WorkingDirectory = "C:\Program Files\MyFiles\"
p.FileName = "PsExec.exe"

Then I get a different error:

"The system cannot find the path specified"

Both ways work just fine if I don't use the UserName, Password and Domain.

I don't understand what I'm missing here. Any help is greatly appreciated.

Thank you in advance,
t shaffer

Posted 4-Mar-14 9:34am

Tisha Shaffer

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Comments

Sergey Alexandrovich Kryukov 4-Mar-14 16:24pm

This is unrelated to programming. This is related to the use of one particular program PsExec (is it Sysinternals telnet replacement)? It does work...
—SA

Tisha Shaffer 4-Mar-14 16:47pm

I don't understand what you are saying. Yes, it does work perfectly, if I don't assign the UserName, Password and Domain and run the program as myself on my developement PC. If I assign my own credentials to UserName, Password and Domain, I get the errors.
I'm having trouble seeing how your comment helps me.

t shaffer

Bernhard Hiller 5-Mar-14 3:20am

More likely, the problem is in that "PsExec.exe" which is unknown to any of us here - it is in C:\Program Files\MyFiles which indicates that it is your work.
I assume that the Impersonization happens in that program - your code snippet does not show anything related to impersonization at all. Show us the relevant code snippets of PsExec.

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Tisha Shaffer · Answer 1 · 2014-03-05T03:10:00

Maybe Impersonization is the wrong word, I need to run a process on the local PC that the program runs on as a different user than the user that is logged on. From what I understand, when using ProcessStartInfo, setting the UserName, Password and Domain will accomplish this task.
I simplified my code to simply run notepad.exe. I copied notepad.exe into "MyFiles" directory.
Remember, I'm setting the UserName, Password and Domain to my own credentials. I still get the same results:

VB

Dim p As New ProcessStartInfo()
            With p
                Dim exec As String = "C:\Program Files\MyFiles\notepad.exe"
                If File.Exists(exec) Then
                    p.FileName = exec
                    p.WindowStyle = ProcessWindowStyle.Hidden
                    p.UseShellExecute = False
                    p.RedirectStandardOutput = True
                    p.RedirectStandardError = True
                    'p.UserName = "myUser"
                    'p.Password = ConvertToSecureString("myPassword")
                    'p.Domain = "myDomain"

                    Dim x As Process = Process.Start(p)
                    Dim output As String = x.StandardOutput.ReadToEnd()
                    Dim err As String = x.StandardError.ReadToEnd()
                    WriteLog("output: " & output)
                    WriteLog("err: " & err)
                    x.WaitForExit()
                End If
            End With

In my opinion, this has nothing to do with what process I am trying to run.

Thank you,
tshaffer