Win32Shutdown

Question

I am using Win32Shutdown to shut down three PC's while nobody is logged on (screen is at "Press CTRL+ALT+DELETE to log on").

Two are Dells from 2007 and the other is a Dell from 2003. Only one of the three shuts down while logged off (one of the Dells from 2007).

I have tried everything to shut them down while logged off but nothing works. I think it is a hard disk/Windows issue.

Just wondering if anyone else had this issue?

 

 

Answer 1

Are you doing any apps for this. 

please provide some more information.

---

With Regards, DP

Answer 2

To shutdown the PC you could use the following method: Please be advised that you got to add "System.Management" reference.

    public void Shutdown()
    {
      ManagementBaseObject mboShutdown = null;
      ManagementClass mcWin32 = new ManagementClass("Win32_OperatingSystem");
      mcWin32.Get();
      // You can't shutdown without security privileges
      mcWin32.Scope.Options.EnablePrivileges = true;
      ManagementBaseObject mboShutdownParams = mcWin32.GetMethodParameters("Win32Shutdown");
      // Flag 1 means we want to shut down the system
      mboShutdownParams["Flags"] = "1";
      mboShutdownParams["Reserved"] = "0";
      foreach (ManagementObject manObj in mcWin32.GetInstances())
      {
        mboShutdown = manObj.InvokeMethod("Win32Shutdown", mboShutdownParams, null);
      }
    }

also you can use the following flags to suit your needs accordingly:

Flags:
- 0 (0x0) Log Off
- 4 (0x4) Forced Log Off (0 4)
- 1 (0x1) Shutdown
- 5 (0x5) Forced Shutdown (1 4)
- 2 (0x2) Reboot
- 6 (0x6) Forced Reboot (2 4)
- 8 (0x8) Power Off
- 12 (0xC) Forced Power Off (8 4)

---

Balaji Baskar
[Please mark the post as answer if it answers your question]
[http://codesupport.wordpress.com]

Answer 3

Are you doing any apps for this. 

please provide some more information.

---

With Regards, DP

It's a web service that starts when the PC is logged off. When someone logs off it starts the web service which powers off the PC at a certain time (it reads this from a file). It works OK on one test machine I have but not the two others.

Answer 4

To shutdown the PC you could use the following method: Please be advised that you got to add "System.Management" reference.

  public
 void
 Shutdown()
  {
   ManagementBaseObject mboShutdown = null
;
   ManagementClass mcWin32 = new
 ManagementClass("Win32_OperatingSystem"
);
   mcWin32.Get();
   // You can't shutdown without security privileges

   mcWin32.Scope.Options.EnablePrivileges = true
;
   ManagementBaseObject mboShutdownParams = mcWin32.GetMethodParameters("Win32Shutdown"
);
   // Flag 1 means we want to shut down the system

   mboShutdownParams["Flags"
] = "1"
;
   mboShutdownParams["Reserved"
] = "0"
;
   foreach
 (ManagementObject manObj in
 mcWin32.GetInstances())
   {
    mboShutdown = manObj.InvokeMethod("Win32Shutdown"
, mboShutdownParams, null
);
   }
  }

also you can use the following flags to suit your needs accordingly:

Flags:
- 0 (0x0) Log Off
- 4 (0x4) Forced Log Off (0 4)
- 1 (0x1) Shutdown
- 5 (0x5) Forced Shutdown (1 4)
- 2 (0x2) Reboot
- 6 (0x6) Forced Reboot (2 4)
- 8 (0x8) Power Off
- 12 (0xC) Forced Power Off (8 4)

---

Balaji Baskar
[Please mark the post as answer if it answers your question]
[http://codesupport.wordpress.com]

I tried

• 1(0x1) Shutdown
• 5 (0x5) Forced Shutdown (1 4)
• 12 (0xC) Forced Power Off (8 4)

and none of them worked (while no-one is looged on to the PC). As I say it only happens with two pcs, the other one is fine. Both have the same OS (Windows 7)

 

Answer 5

It's a web service that starts when the PC is logged off. When someone logs off it starts the web service which powers off the PC at a certain time (it reads this from a file). It works OK on one test machine I have but not the two others.

Is it a windows service or web service?

---

Balaji Baskar
[Please mark the post as answer if it answers your question]
[http://codesupport.wordpress.com]

Answer 6

It's a web service that starts when the PC is logged off. When someone logs off it starts the web service which powers off the PC at a certain time (it reads this from a file). It works OK on one test machine I have but not the two others.

Is it a windows service or web service?

---

Balaji Baskar
[Please mark the post as answer if it answers your question]
[http://codesupport.wordpress.com]

Sorry my mistake; it's a Windows service.

Answer 7

also one more thing since you are using "Win32Shutdown" in windows 7 system, can check if it is 32-bit OS or 64-bit OS ?

---

Balaji Baskar
[Please mark the post as answer if it answers your question]
[http://codesupport.wordpress.com]

Answer 8

Are you doing any apps for this. 

please provide some more information.

---

With Regards, DP

It's a Windows service. It starts when the user logs off and then turns off the PC after a certain amount of time has elapsed after log off (this amount of time is read from a timer).

However it only works for me on one test PC? I am using WIn32Shutdown to shut it down

Answer 9

Use the below code

System.Diagnostics.Process.Start("Shutdown", "-s -t 10");  

 

This will helps to shutdown your pc. Once your condition gets true.

This will resolve your problem.

---

With Regards, DP

Answer 10

also one more thing since you are using "Win32Shutdown " in windows 7 system, can check if it is 32-bit OS or 64-bit OS ?

---

Balaji Baskar
[Please mark the post as answer if it answers your question]
[http://codesupport.wordpress.com]

It's 32-bit. But the PC it does shut down in is also 32-bit so it isn't that.

Answer 11

Use the below code

System.Diagnostics.Process.Start("Shutdown", "-s -t 10");  

 

This will helps to shutdown your pc. Once your condition gets true.

This will resolve your problem.

---

With Regards, DP

Thanks for the reply but it doesn't work; it only works when logged on. Maybe it is a hardware issue?