Hi Bilou, So it works with your WinXP Sp2 configuration? Is this also working in runtime and not at install or first boot? In the Microsoft documentation i read about using HKLM\System\CurrentControlSet\Control and not CurrentControlSet001\ and two more questions; - If it is working, are there no popups at all? , or do you see a quick windows that exits fast? - where do I specify the action? If I use setting as shown below it doesn't work. Could it be a registry rights issue? Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Error Message Instrument] "EnableDefaultReply"=dword:00000001 "EnableLogging"=dword:00000001 "LogSeverity"=dword:00000000 [HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Eventlog\Application\Error Instrument] "TypesSupported"=dword:00000007 "EventMessageFile"=hex(2):25,00,25,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,\ 00,6f,00,6f,00,74,00,25,00,25,00,5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,\ 33,00,32,00,5c,00,55,00,73,00,65,00,72,00,33,00,32,00,2e,00,64,00,6c,00,6c,\ 00,20,00,00,00