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Classic ASP pages not loading (IIS 6 & Server 2003)

Posted on 2011-09-21
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Last Modified: 2012-05-12
We have about 100 classic asp web forms running on our server (Server 2003 & IIS 6) used to send emails. They worked perfectly for many months but recently the asp pages would stop loading although html files running on the same site would still load fine.

The only way to get the asp pages working again is to recycle the application pool in IIS. In the past few days though we've had to recyle the application pool about every 10 minutes. There are no errors in the logs and we rebooted the server yesterday and they worked for about 30 minutes then had problems again.

 Does anyone have any idea what the problem could be or know of an IIS debugger we could use to find the problem?

Thanks!
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Question by:bertmoen
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mgfranz earned 500 total points
ID: 36576374
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by:bertmoen
ID: 36577026
After 3 days of taking shots in the dark to fix the problem (because there were no errors being logged anywhere) we finally found and fixed the problem. I'll state it here in case anyone else ever runs into this unusual circumstance.

There was a copy of Visual Studio loaded on the server. When an asp page had an error the VS JIT debugger would hijack the W3WP worker process so Recycling the application pool was our only way to fix it temporarily.  I wasn't seeing the JIT debugger but I saw them using Process Explorer and found out what was happening. The problem asp code was fixed and the JIT debugger was turned off on the server.

mgfranz, thanks for your response, I'll reward the points to you.
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Author Closing Comment

by:bertmoen
ID: 36577036
See post above for how this problem was resolved.
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Expert Comment

by:mgfranz
ID: 36577150
You don't have to give me the points, ask the moderator to refund them.  Your solution is a common problem with IIS and VS, I ran into the same thing on my XP development laptop, my only solution was to install IIS 7.5 Express on top of 5.1, the only time I would encounter a problem if a .asp page was loaded while I have the debugger running a VS .aspx app.  I would have to stop the debugger and reload the .asp page, but it never killed IIS 5.1.

I'm running 7.5 on a Windows 7 machine with VS 2008 Express versions of C++, VB and Web Dev without seeing any issues, using the link I provided solved the issue of running .asp pages so I thought you might be having the same problems.  Feel free to ask for a refund and have the question archived for future reference.
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