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From: Jochen Kalmbach [MVP] on 16 Dec 2009 01:37
Hi Grzegorz!

> On pre vista OSes it used to be working, on Vista it works too but not
> for every process. For some processes OpenEvent(EVENT_MODIFY_STATE,...)
> fails with GetLastError() returning 5 (ERROR_ACCESS_DENIED).

Maybe it is the same problem, as with NamesdPipes...
See:
http://msdn.microsoft.com/en-us/library/bb625963.aspx

And here is a german posting about this problem:
http://blog.m-ri.de/index.php/2009/12/08/windows-integrity-control-schreibzugriff-auf-eine-named-pipe-eines-services-ueber-anonymen-zugriff-auf-vista-windows-2008-server-und-windows-7/

=> you must use the following SDDL-String:
#define UNTRUSTED_INTEGRITY_SDDL_SACL _T("S:(ML;;NW;;;S-1-16-0)")

--
Greetings
Jochen

My blog about Win32 and .NET
http://blog.kalmbachnet.de/
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