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Article ID: 312941 - Last Review: July 7, 2008 - Revision: 4.1
PRB: IIS May Hang If You Enable ASP Server-Side Script Debugging
This article was previously published under Q312941
We strongly recommend that all users upgrade to Microsoft Internet Information Services (IIS) version 7.0 running on Microsoft Windows Server 2008. IIS 7.0 significantly increases Web infrastructure security. For more information about IIS security-related topics, visit the following Microsoft Web site:
For more information about IIS 7.0, visit the following Microsoft Web site:
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 later in a development environment.
This behavior occurs because you have not properly
configured the default debugger that is in use.
To resolve this behavior, make the additional
configurations that are outlined in the following article in the Microsoft
Knowledge Base:
281427Â
(http://kbalertz.com/Feedback.aspx?kbNumber=281427/EN-US/
)
PRB: Microsoft Script Debugger Does Not Break at Error
This
behavior is by design.
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.
When ASP server-side script debugging is
enabled, the value for
ASP Requests Executing in Performance Monitor will never be more than 1. The value for
ASP Requests Queued will grow depending on the number of requests that are made to
the server. This is known as "ASP execution serialization".
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