So using InitiateSystemShutdownEx causes a Win32 machine to go log off go to the shutdown screen and just sit there displaying shutting down with the working indicator just spinning. I left the machine sitting there for an hour and it never shut down. Not sure whats going on. This works fine on all the Win7 x64 machines we are using but the one 32 bit Win7 machine has this problem and it occurs no matter what parameters I pass.

Code:
HANDLE hToken; 
	TOKEN_PRIVILEGES tkp; 

	// Get a token for this process. 

	if (!OpenProcessToken(GetCurrentProcess(), 
		TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken)) 
		return false ; 

	// Get the LUID for the shutdown privilege. 

	LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME, 
		&tkp.Privileges[0].Luid); 

	tkp.PrivilegeCount = 1;  // one privilege to set    
	tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; 

	// Get the shutdown privilege for this process. 

	AdjustTokenPrivileges(hToken, FALSE, &tkp, 0, 
		(PTOKEN_PRIVILEGES)NULL, 0); 

	if (GetLastError() != ERROR_SUCCESS) 
		return false;

             if(InitiateSystemShutdownEx( NULL, NULL, 0, TRUE, FALSE, SHTDN_REASON_MAJOR_OPERATINGSYSTEM | SHTDN_REASON_MINOR_UPGRADE | SHTDN_REASON_FLAG_PLANNED ) )
             {
	   tkp.Privileges[0].Attributes = SE_PRIVILEGE_REMOVED;
	   AdjustTokenPrivileges(hToken, FALSE, &tkp, 0, (PTOKEN_PRIVILEGES)NULL, 0); 
	   CloseHandle( hToken );
	   return false;
	}
This is working fine on Win7 x64 but not on the one Win7 32 system we have and like I said it starts the shutdown process just never finishes.