Microsoft KB Archive/936344

= FIX: A significant delay may occur when you try to debug an ASP.NET-connected application in Visual Studio 2005 =

Article ID: 936344

Article Last Modified on 12/3/2007

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APPLIES TO


 * Microsoft .NET Framework 2.0
 * Microsoft Visual Studio 2005 Standard Edition
 * Microsoft Visual Studio 2005 Professional Edition
 * Microsoft Visual Studio 2005 Express Edition
 * Microsoft Visual Studio 2005 Team Edition for Software Architects
 * Microsoft Visual Studio 2005 Team Edition for Software Developers
 * Microsoft Visual Studio 2005 Team Edition for Software Testers

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SYMPTOMS
Consider the following scenario:
 * In Microsoft Visual Studio 2005, you create multiple pages in different folders in an ASP.NET-connected application.
 * These pages use the same name.
 * You set a breakpoint in one of these pages.

In this scenario, a significant delay may occur when you try to debug the ASP.NET-connected application. Additionally, this delay may cause a time-out error. In this case, you receive the following error message:

Unable to start debugging on the web server. The operation has timeout.



CAUSE
This problem is caused by a performance issue in the Microsoft .NET Framework 2.0 and in Visual Studio 2005.



Download information
The following file is available for download from the Microsoft Download Center:

Download the 312945_ENU_i386_zip.exe package now.

Release Date: 8/17/2007

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services

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Hotfix information
A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Microsoft .NET Framework 2.0 service pack and Visual Studio 2005 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
You must have Visual Studio 2005 Service Pack 1 installed to apply this hotfix.

Restart requirement
You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

The .NET Framework 2.0
Note To completely resolve this problem, you must install two separate hotfix packages. One hotfix resolves a performance issue in the Diasymreader.dll file in the .NET Framework 2.0. The other hotfix resolves an issue in the Vsdebug.dll file in Visual Studio 2005.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
To determine whether you are experiencing this problem, use one of the following methods.

Method 1: Disable all the breakpoints

 * 1) Open Visual Studio 2005.
 * 2) Open the ASP.NET-connected application.
 * 3) On the Debug menu, click Delete All Breakpoints.
 * 4) Determine whether performance improves.

Method 2: Disable the &quot;Require source files to exactly match the original version&quot; option

 * 1) Open Visual Studio 2005.
 * 2) On the Tools menu, click Options.
 * 3) Click to select the Show all settings check box.
 * 4) Click the Debugging node.
 * 5) Click to clear the Require source files to exactly match the original version check box.

Note If you clear the Require source files to exactly match the original version check box, you have to use function breakpoints.
 * 1) Determine whether performance improves.



For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbfix kbqfe kbpubtypekc kbhotfixserver KB936344

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