w3wp.exe process crashing.

[msnews.microsoft.com]

Hi all,

I have a problem which I've seen mentioned quite a few time around the net,
but nothing seems to work.

I've created a web service with one method (see code below). It's running
under IIS set to Windows Authentication. Calling the web service from a
client application or the browser works fine. The problem is that every few
minutes, I receive a "Memory cannot be written" error from w3wp.exe and the
web services dies. I then must proceed to shutting down visual studio,
empty the aspnet temporary files and restart IIS in order for the web
service to come back online. Otherwise I get a stupid "Mutex cannot be
created" error each time I try to connect to my web service. The crash
doesn't happen when I actually call on the web service, but rather several
minues after i leave my service.asmx website.

Why on earth does w3wp.exe crash?


/// ****************** CODE
[WebMethod]
public string MyMethod()
{
if (!(this.User.Identity is System.Security.Principal.WindowsIdentity))
{
return null;
}

System.Security.Principal.WindowsIdentity user = this.User.Identity as
System.Security.Principal.WindowsIdentity;


if (!user.IsAuthenticated || user.IsAnonymous)
{
return null;
}

return "Req User SID: " + user.Name;
}
/// ******************* CODE

 

[msnews.microsoft.com]

One more piece of information: As soon as I start getting the "Mutex cannot
be created" error, I usually call 'iisreset' to reset IIS and then I receive
the "Memory cannot be read" error from w3wp.exe again.