Hello Norman,
From your description, you have originally developed many windows NT
service application upon .net framework 1.1 and when you recompile them
through .net framework 2.0 and running again, they stop working, and will
report some System.Security.SecurityException (4436) , correct?
As for this problem , I've just performed some research against our product
issue database and haven't found existing known issue on this. I think this
is likely a program specific issue. As you mentioned that the program is a
mixture of managed and unmanged code, this is the potential cause, would
you provide some detailed info about the code logic of the service program
such as how the managed part launch the unmanaged part to do the main task?
So far I would suggest you test through the following steps:
1. Since the exception is a security exception which is normally caused by
net code access security checking, you can try temporarily turn off the
CAS checking on your test machine to see whether the exception still occur
or change to a different behavior. To turnoff CAS temporarily, you can use
the caspol.exe tool:
#Code Access Security Policy Tool (Caspol.exe)
http://msdn2.microsoft.com/en-us/library/cb6t8dtz.aspx
2. Use some debugger like visual studio to attache your windows service
program, you can set some break point at the access point where your
managed handler launch unmanaged components, I think it is likely at those
points the exception be thrown.
Please feel free to let me know if you have any other finding.
Sincerely,
Steven Cheng
Microsoft MSDN Online Support Lead
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