Terminate Method of the Win32_Process Class (Windows)

Terminate Method of the Win32_Process Class

The Terminate WMI class method terminates a process and all of its threads.

This topic uses Managed Object Format (MOF) syntax. For more information about using this method, see Calling a Method.

Syntax

MOF

uint32 Terminate(
  [in]  uint32 Reason
);

Parameters

Reason [in]: Exit code for the process and for all of the threads terminated as a result of this call.

Return Value

Returns a value of 0 (zero) if the process was successfully terminated, and any other number to indicate an error.

Return code	Description
0	Successful Completion
2	Access Denied
3	Insufficient Privilege
8	Unknown Failure
9	Path Not Found
21	Invalid Parameter

Remarks

To terminate a process that you do not own, enable the SeDebugPrivilege privilege. In VBScript, you can enable this privilege with the following lines of code:

Set objLoc = createobject("wbemscripting.swbemlocator")
objLoc.Security_.privileges.addasstring "sedebugprivilege", true

For more information about enabling this privilege in C++, see Enabling and Disabling Privileges in C++.

Examples

The following VBScript code example connects to a remote computer and terminates Notepad.exe on that computer.

strComputer = "FullComputerName" 
strDomain = "DOMAIN" 
strUser = InputBox("Enter user name") 
strPassword = InputBox("Enter password") 
Set objSWbemLocator = CreateObject("WbemScripting.SWbemLocator") 
Set objWMIService = objSWbemLocator.ConnectServer(strComputer, _ 
    "root\CIMV2", _ 
    strUser, _ 
    strPassword, _ 
    "MS_409", _ 
    "ntlmdomain:" + strDomain) 
Set colProcessList = objWMIService.ExecQuery _
    ("SELECT * FROM Win32_Process WHERE Name = 'notepad.exe'")
For Each objProcess in colProcessList
    objProcess.Terminate()
Next

The following C++ code terminates the Notepad.exe process on the local computer. Specify a or process handle (process id) in the code to terminate the process. This value can be found in the handle property in the Win32_Process class (the key property for the class). By specifying a value for the Handle property, you are supplying a path to the instance of the class that you want to terminate. For more information about connecting to a remote computer, see Example: Getting WMI Data From a Remote Computer.

#define _WIN32_DCOM

#include <iostream>
using namespace std;
#include <comdef.h>
#include <Wbemidl.h>

# pragma comment(lib, "wbemuuid.lib")

int main(int iArgCnt, char ** argv)
{
    HRESULT hres;

    // Step 1: --------------------------------------------------
    // Initialize COM. ------------------------------------------

    hres =  CoInitializeEx(0, COINIT_MULTITHREADED); 
    if (FAILED(hres))
    {
        cout << "Failed to initialize COM library. Error code = 0x" 
             << hex << hres << endl;
        return 1;                  // Program has failed.
    }

    // Step 2: --------------------------------------------------
    // Set general COM security levels --------------------------
    // Note: If you are using Windows 2000, specify -
    // the default authentication credentials for a user by using
    // a SOLE_AUTHENTICATION_LIST structure in the pAuthList ----
    // parameter of CoInitializeSecurity ------------------------

    hres =  CoInitializeSecurity(
        NULL, 
        -1,                          // COM negotiates service
        NULL,                        // Authentication services
        NULL,                        // Reserved
        RPC_C_AUTHN_LEVEL_DEFAULT,   // Default authentication 
        RPC_C_IMP_LEVEL_IMPERSONATE, // Default Impersonation  
        NULL,                        // Authentication info
        EOAC_NONE,                   // Additional capabilities 
        NULL                         // Reserved
        );

                      
    if (FAILED(hres))
    {
        cout << "Failed to initialize security. Error code = 0x" 
             << hex << hres << endl;
        CoUninitialize();
        return 1;                      // Program has failed.
    }
    
    // Step 3: ---------------------------------------------------
    // Obtain the initial locator to WMI -------------------------

    IWbemLocator *pLoc = NULL;

    hres = CoCreateInstance(
        CLSID_WbemLocator,             
        0, 
        CLSCTX_INPROC_SERVER, 
        IID_IWbemLocator, (LPVOID *) &pLoc);
 
    if (FAILED(hres))
    {
        cout << "Failed to create IWbemLocator object. "
             << "Err code = 0x"
             << hex << hres << endl;
        CoUninitialize();
        return 1;                 // Program has failed.
    }

    // Step 4: ---------------------------------------------------
    // Connect to WMI through the IWbemLocator::ConnectServer method

    IWbemServices *pSvc = NULL;
	
    // Connect to the local root\cimv2 namespace
    // and obtain pointer pSvc to make IWbemServices calls.
    hres = pLoc->ConnectServer(
        _bstr_t(L"ROOT\\CIMV2"), 
        NULL,
        NULL, 
        0, 
        NULL, 
        0, 
        0, 
        &pSvc
    );
	    
    if (FAILED(hres))
    {
        cout << "Could not connect. Error code = 0x" 
             << hex << hres << endl;
        pLoc->Release();
        pSvc->Release();     
        CoUninitialize();
        return 1;                // Program has failed.
    }

    cout << "Connected to ROOT\\CIMV2 WMI namespace" << endl;


    // Step 5: --------------------------------------------------
    // Set security levels for the proxy ------------------------

    hres = CoSetProxyBlanket(
        pSvc,                        // Indicates the proxy to set
        RPC_C_AUTHN_WINNT,           // RPC_C_AUTHN_xxx 
        RPC_C_AUTHZ_NONE,            // RPC_C_AUTHZ_xxx 
        NULL,                        // Server principal name 
        RPC_C_AUTHN_LEVEL_CALL,      // RPC_C_AUTHN_LEVEL_xxx 
        RPC_C_IMP_LEVEL_IMPERSONATE, // RPC_C_IMP_LEVEL_xxx
        NULL,                        // client identity
        EOAC_NONE                    // proxy capabilities 
    );

    if (FAILED(hres))
    {
        cout << "Could not set proxy blanket. Error code = 0x" 
             << hex << hres << endl;
        pSvc->Release();
        pLoc->Release();     
        CoUninitialize();
        return 1;               // Program has failed.
    }

    // Step 6: --------------------------------------------------
    // Use the IWbemServices pointer to make requests of WMI ----

    // Set up to call the Win32_Process::Create method
    BSTR ClassName = SysAllocString(L"Win32_Process");

    /* YOU NEED TO CHANGE THE NUMBER VALUE OF THE HANDLE 
       (PROCESS ID) TO THE CORRECT VALUE OF THE PROCESS YOU 
       ARE TRYING TO TERMINATE (this provides a path to
       the class instance you are tying to terminate). */
    BSTR ClassNameInstance = SysAllocString(
        L"Win32_Process.Handle=\"3168\"");

    _bstr_t MethodName = (L"Terminate");
    BSTR ParameterName = SysAllocString(L"Reason");

    IWbemClassObject* pClass = NULL;
    hres = pSvc->GetObject(ClassName, 0, NULL, &pClass, NULL);

    IWbemClassObject* pInParamsDefinition = NULL;
    IWbemClassObject* pOutMethod = NULL;
    hres = pClass->GetMethod(MethodName, 0, 
        &pInParamsDefinition, &pOutMethod);

    if (FAILED(hres))
    {
        cout << "Could not get the method. Error code = 0x" 
             << hex << hres << endl;
    }

    IWbemClassObject* pClassInstance = NULL;
    hres = pInParamsDefinition->SpawnInstance(0, &pClassInstance);

    // Create the values for the in parameters
    VARIANT pcVal;
    VariantInit(&pcVal);
    V_VT(&pcVal) = VT_I4;

    // Store the value for the in parameters
    hres = pClassInstance->Put(L"Reason", 0,
        &pcVal, 0);

    // Execute Method
    hres = pSvc->ExecMethod(ClassNameInstance, MethodName, 0,
    NULL, pClassInstance, NULL, NULL);

    if (FAILED(hres))
    {
        cout << "Could not execute method. Error code = 0x" 
             << hex << hres << endl;
        VariantClear(&pcVal);
        SysFreeString(ClassName);
        SysFreeString(MethodName);
        pClass->Release();
        pInParamsDefinition->Release();
        pSvc->Release();
        pLoc->Release();     
        CoUninitialize();
        return 1;           // Program has failed.
    }


    // Clean up
    //--------------------------
    VariantClear(&pcVal);
    SysFreeString(ClassName);
    SysFreeString(MethodName);
    pClass->Release();
    pInParamsDefinition->Release();
    pLoc->Release();
    pSvc->Release();
    CoUninitialize();
    return 0;
}

Requirements

Minimum supported client	Windows 2000 Professional
Minimum supported server	Windows 2000 Server
MOF	Cimwin32.mof
DLL	Cimwin32.dll
Namespace	\root\cimv2