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Q312941: PRB: IIS May Hang If You Enable ASP Server-Side Script Debugging

Article: Q312941
Product(s): Internet Information Server
Version(s): 4.0,5.0
Operating System(s): 
Keyword(s): kbdocerr
Last Modified: 22-JAN-2002

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The information in this article applies to:

- Microsoft Internet Information Services version 5.0 
- Microsoft Internet Information Server version 4.0 
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SYMPTOMS
========

If you enable Active Server Pages (ASP) server-side script debugging in the Web
site configuration and ASP encounters a scripting error, Internet Information
Services (IIS) may hang, but no error messages are sent to the client browser.

NOTE: This behavior may occur if you have installed the Microsoft Script Debugger
or Microsoft Visual Interdev on a server that is running Microsoft IIS 4.0 or
5.0 in a development environment.

CAUSE
=====

This behavior occurs because you have not properly configured the default
debugger that is in use.

RESOLUTION
==========

To resolve this behavior, make the additional configurations that are outlined
in the following article in the Microsoft Knowledge Base:

  Q281427 PRB: Microsoft Script Debugger Does Not Break at Error

STATUS
======

This behavior is by design.

MORE INFORMATION
================

You should not enable the Enable Server-Side Script Debugging property on a
production environment.

The enabling of server-side script debugging causes ASP to run in a single
threaded mode; therefore, one thread at a time only executes for each
application. Even if you properly configure the Microsoft Script Debugger, this
dramatically affects the Web server performance.

Additional query words: iis 5 debugger Script pdm msscrdbg

======================================================================
Keywords          : kbdocerr 
Technology        : kbiisSearch kbiis500 kbiis400
Version           : :4.0,5.0
Issue type        : kbprb

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