XP Event Log - Access Denied

From: Eric Haper (eric.harper@macrovisioneurope.com)
Date: 01/14/03 

From: eric.harper@macrovisioneurope.com (Eric Haper)
Date: 14 Jan 2003 02:41:46 -0800

I have an ISAPI DLL written several years ago and running successfully
on NT4 Server under IIS 4 and now Windows 2000 Server using IIS 5. The
DLL writes housekeeping messages to the Application Log in the Event
Log. I have recently installed the DLL onto XP Professional with IIS
installed and noticed that although the DLL seemed to work correctly
in every other way no entries were being made to the Event Log.

I have traced this down to RegisterEventSource returning a NULL handle
 and when querying GetLastError it is reporting "Access Denied". All
the Registry access functions (RegSetValueEx etc) work correctly with
no permission problems.

In each OS IIS was installed 'out of the box' with no change made to
any accounts or permissions. Can anyone shed any light as to why XP is
failing to write and any possible fix.

Eric Harper

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