Microsoft KB Archive/308364

= How to debug Windows Script Host, VBScript, and JScript files =

Article ID: 308364

Article Last Modified on 5/24/2005

-

APPLIES TO


 * Microsoft Windows Scripting Host 2.5

-



This article was previously published under Q308364



SUMMARY
The purpose of this article is to explain how to debug Windows Script Host (WSH) scripts, which can be written in any ActiveX script language (as long as the proper language engine is installed), but which, by default, are written in VBScript and JScript. There are certain flags in the registry and, depending on the debugger used, certain required procedures to enable debugging.



MORE INFORMATION
To debug WSH scripts in Microsoft Visual InterDev, the Microsoft Script Debugger, or any other debugger, use the following command-line syntax to start the script: wscript.exe //d  This code informs the user when a runtime error has occurred and gives the user a choice to debug the application. Also, the //x flag can be used, as follows, to throw an immediate exception, which starts the debugger immediately after the script starts running: wscript.exe //d //x  After a debug condition exists, the following registry key determines which debugger will be used:

HKEY_CLASSES_ROOT\CLSID\{834128A2-51F4-11D0-8F20-00805F2CD064}\LocalServer32

The script debugger should be Msscrdbg.exe, and the Visual InterDev debugger should be Mdm.exe.

If Visual InterDev is the default debugger, make sure that just-in-time (JIT) functionality is enabled. To do this, follow these steps:
 * 1) Start Visual InterDev.
 * 2) On the Tools menu, click Options.
 * 3) Click Debugger, and then ensure that the Just-In-Time options are selected for both the General and Script categories.

Additionally, if you are trying to debug a .wsf file, make sure that the following registry key is set to 1:

HKEY_CURRENT_USER\Software\Microsoft\Windows Script\Settings\JITDebug

Keywords: kbinfo kbdswmanage2003swept KB308364

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.