Execute an exe under particular user account?

[Lost User]

Hi all, I want to execute an executable file under particular user account in my C# application. can any body tell me how to do the same? Thanking You, Sunil G.

[toronja72]

you could check the "runas" command specify the executable and particular user as arguments.

[Lost User]

using Process.Start[^], it supports launching a process under a particular user;

MSDN states:

Use this overload to create a new process and its primary thread by specifying its file name, command-line arguments, user name, password, and domain. The new process then runs the specified executable file in the security context of the specified credentials (user, domain, and password).

I are Troll :suss:

[Lost User]

I want to execute using current logged on user token.

[Covean]

You have got an eMail. (I hope :laugh: ). Hope that helps you.

Greetings Covean

[Lost User]

Then you'd only need to start it, without giving credentials at all - and the process will be started under the credentials of the current (signed in) user :)

I are Troll :suss:

[Sunil G 3]

Yeh i got ur mail. Thank u very much.

[Luc Pattyn]

questions should be answered within the thread, and not by e-mail. That way anyone can benefit. :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

---

I only read code that is properly formatted, adding PRE tags is the easiest way to obtain that.

---

[Covean]

Yes there you are right but I send him more than 300 lines of code. I think this is tooo long for this forum. But here a short version (with out DLLImports, structs, ...):

    public static void StartProcessOnActiveConsole(string szApplication, string szArguments, string szDirectory)
    {
        IntPtr hUserToken = IntPtr.Zero;
        IntPtr hDuplicatedUserToken = IntPtr.Zero;
        IntPtr lpEnvironment = IntPtr.Zero;
        IntPtr hProcess = IntPtr.Zero;
        IntPtr hThread = IntPtr.Zero;
        try
        {
            uint dwSessionId = 0xFFFFFFFF;
            dwSessionId = WTSGetActiveConsoleSessionId();
            if (dwSessionId == 0xFFFFFFFF)  // no active session
                return;

             if(!WTSQueryUserToken(dwSessionId, ref hUserToken))
                throw new Exception("WTSQueryUserToken failed. GetLastError() = " + Marshal.GetLastWin32Error());

            if(!DuplicateTokenEx(hUserToken, 0x02000000 /\*MAXIMUM\_ALLOWED\*/, IntPtr.Zero, SECURITY\_IMPERSONATION\_LEVEL.SecurityImpersonation, TOKEN\_TYPE.TokenPrimary, ref hDuplicatedUserToken))
                throw new Exception("DuplicateTokenEx failed. GetLastError() = " + Marshal.GetLastWin32Error());

            if(!CreateEnvironmentBlock(ref lpEnvironment, hDuplicatedUserToken, false))
                throw new Exception("CreateEnvironmentBlock failed. GetLastError() = " + Marshal.GetLastWin32Error());

            STARTUPINFO startupInfo = new STARTUPINFO();
            startupInfo.dwSize = (uint)Marshal.SizeOf(startupInfo);
            startupInfo.pReserved = IntPtr.Zero;
            startupInfo.szDesktop = "winsta0\\\\default";
            startupInfo.pTitle = IntPtr.Zero;
            startupInfo.dwX = 0;
            startupInfo.dwY = 0;
            startupInfo.dwXSize = 0;
            startupInfo.dwYSize = 0;
            startupInfo.dwXCountChars = 0;
            startupInfo.dwYCountChars = 0;
            startupInfo.dwFillAttribute = 0;
            startupInfo.dwFlags = 128 /\*STARTF\_FORCEOFFFEEDBACK\*/;
            startupInfo.wShowWindow = 0;
            startupInfo.wReserved2 = 0;
            startupInfo.lpReserved2 = IntPtr.Zero;
            startupInfo.hStdInput = IntPtr.Zero;
            startupInfo.hStdOutput = IntPtr.Zero;
            startupInfo.hStdError = IntPtr.Zero;

            PROCESS\_INFORMATION processIn