Actually it seems that this is a behavior corrected in XP Service pack 2.
No exception, win32api.InitiateSystemShutdown does correctly his job, fine.

le dahut wrote :
> With "InitiateSystemShutdown" I get :
> 21, "Device is not ready."
> 
> with "WTSShutdownSystem" :
> 1702, "The binding handle is invalid."
> but even if I don't logon, it reboots after approximately 15 loops of 2 
> seconds but after reboot the machine is extremely slow and has a strange 
> behavior
> 
> "ExitWindowsEx" does its job correctly excepted that the workstation is 
> extremly slow and need a manual reboot to work fine...
> 
> Klaas
> 
> 
> Tim Golden wrote :
>> le dahut wrote:
>>> To reboot the computer I've tried this different functions :
>>> win32api.ExitWindowsEx(EWX_REBOOT | EWX_FORCE)
>>> win32api.InitiateSystemShutdown(None, '', 0, True, 1)
>>> win32ts.WTSShutdownSystem(wts.WTS_CURRENT_SERVER_HANDLE, wts.WTS_WSD_REBOOT)
>>> wa.WinExec('shutdown -r -t 0 -f')
>>>
>>> I've correctly setup 'SeShutdownPrivilege' before calling them.
>>> The "bForceAppsClosed" is set to True
>>>
>>>
>>> Since I noticed that they didn't reboot the computer but raised an 
>>> error, I've put them in a loop :
>>> while True:
>>>    try:
>>>      wa.ExitWindowsEx(...)
>>>      break
>>>    except Exception, e:
>>>      logging.error('%s'%e)
>>>      time.sleep(0.5)
>>>
>>> This permits to reboot the workstation after several minutes (between 3 
>>> and 9 minutes).
>> I'm not sure I can personally offer much here, le dahut, but
>> it would help if you showed the traceback you *are* getting.
>> Surely there's some clue in there which might suggest why
>> you're prevented from rebooting before a delay period.
>>
>> TJG
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