IIS6 hangs with Connection_Dropped DefaultAppPool message

Hi All,

I have a server with two web sites on it - one is default and another is using different (netted) IP address. There is an ASP application on it. Recently I upgraded the box from NT4/IIS5/SQL7 to Win2k3,SP1/IIS6/SQL2K.
It seemed to work fine for a couple of days, but lately I often could not log in to the application. It would display the first default (login) page and after I enter the password it would hang, and hang, and hang... I know that it is not the database, because if I enter incorrect password it gives me “invalid password” message. Sometimes I can not login to one web site, but another is OK, sometimes vise versa, sometimes both sites hang. I already reinstalled IIS and it worked for a few days, but now it’s back to the same problem.
Also in httperr.log file I found tons of messages like these:
2005-09-28 14:53:36 192.168.124.43 1313 192.168.124.43 80 HTTP/1.1 POST /cams/valid.asp - 1 Connection_Dropped DefaultAppPool
2005-09-28 14:53:36 192.168.124.68 1297 192.168.124.68 80 HTTP/1.1 POST /camstr/valid.asp - 203760572 Connection_Dropped DefaultAppPool

Does anybody have an idea what is going on in my server?

Appreciate any help,
Alex A

Hopefully an IIS6 guru can help, I don't have IIS6 sorry. If you're using asp with Access db's I've heard IIS6 is more finicky with unclosed objects, etc. You might review your code.

Hello there,

The httperr.logs indicates IIS is hanging.

In this case I would take hang dumps using IIS Debug Tools which you could download from MS support site.

Apart from doing this I would try to find out answers to following questions
=====================================
What are the symptoms of this issue? I understand application does not respond; but does it times out or shows any error or browser just does not show anything.

While this is happening could you test simple html/asp/aspx page from the same site?

Does it happen for all pages for this app or just single page?

How is the CPU utilization for w3wp.exe/inetinfo.exe?

Does these processes take high memory ? - This is important.

Once you get the hang dumps, let me know.

Hope this helps!

Cheers!
Ganesh

Hi all,

I m facing the same issue here. win2k3 and IIS6.

Using aspexe to create sqrw.exe object and generate reports. When i use method .ExecuteWinAppAndWait, it returns mi error no like 2 and sometimes 5. When i go to view my httperr, it oso state connection_dropped. Any ideas??

Used to be sitting on win2k and IIS5. ANd everything is running smoothly.

Pls pls advise.
Will be Greatly appreciate!!!

Please see HOWTO: Understand and Diagnose an Application Pool Crash at http://blogs.msdn.com/david.wang/archive/2005/08/29/HOWTO_Understand_and_Diagnose_an_AppPool_Crash.aspx#457928