Shutdown or Restart Machine In C# and ASP.NET

Question

I want to be able to shutdown down or restart the server that my ASP.NET app is running on. The following code works great in debug mode:

Process process = new Process();
ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.FileName = "shutdown";
startInfo.Arguments = "/r /f /t 0";
startInfo.UseShellExecute = true;
startInfo.Verb = "runas";
process.StartInfo = startInfo;
process.Start();

I have also tried this code, but I receive the following error "The Process object must have the UseShellExecute property set to false in order to start a process as a user":

var info = new ProcessStartInfo("shutdown.exe", "/r /t 0");
        info.UserName = "administrator";
        //A not-so-secure use of SecureString
        var secureString = new SecureString();
        var password = "password";
        foreach (var letter in password)
        {
            secureString.AppendChar(letter);
        }
        info.Password = secureString;
        var restart = new Process();
        restart.StartInfo = info;
        restart.Start();

I add the the following to my code:

info.UseShellExecute = false;

Then the error "The Process object must have the UseShellExecute property set to false in order to start a process as a user" goes away, but the the code executes like the first block of code

The server will restart when I execute the code in debug mode or if I run the command is cmd. However when I run the app live on the server, it will not restart. I don't receive any error, or pops saying that the server is or is not going to restart. Can some tell me please what I am doing wrong?

UPDATE: I have added a try-catch and the app never throws an exception. However when I looked up the event logs, I have found the application error event 1000 for shutdown.exe

Isn't it reasuring to learn that your ASP code is not running with administrator priviliges? — user180326
– user180326, Commented Oct 11, 2013 at 18:21
possible duplicate of Restart Server from ASP.NET application when AppPool is ran under LocalSystem or LocalService account — Habib
– Habib, Commented Oct 11, 2013 at 18:25
@Habib No it is not a duplicate I have tried the code block in the link that you have post, I still can't reboot the server. — nate
– nate, Commented Oct 11, 2013 at 18:58

Alex · Accepted Answer · 2013-10-18 13:32:35Z

1

The account under which your application pool is running does not have sufficient privileges to reboot the system, that's why it doesn't occur.

You can change this by logging on to the server and subsequently going to Control Panel > Administrative Tools > Local Security Policy, expanding the Security Settings > Local Policies > User Rights Assignment node and going to the Shut down the system setting. Add the application pool account (or its parent group if you have a group for it) to that list.

answered Oct 18, 2013 at 13:32

Alex

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5 Comments

nate Over a year ago

I am not sure how to find the account this is running under app pool. I assumed it was administrator

Alex Over a year ago

You can view this by going to the IIS Manager, browsing to the folder in which your application resides, and clicking 'Basic settings'. This will show you the name of the application pool. Go to 'Application pools', find the application pool by its name, and look under 'Advanced settings' to find out the account. If it says 'NetworkService' or 'ApplicationPoolIdentity', change it to a dedicated account (don't use your own account!)

nate Over a year ago

I changed the the identity to the administrator account, and added administrator account in the local security policy. I still can't reboot the server.

CMS_95 Over a year ago

@nate your problem may not be the code after some more research and a hunch that your problem is not due to the code it is most likely a program that is running on the server that is preventing a reboot IE you need to google "unable to reboot Windows server".

nate Over a year ago

The server is reboot able. I have been able to do this in batch files, and in cmd using the shutdown command.

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