Windbg scripts, debugging and troubleshooting tools and techniques to help you isolate software problems.
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Tools for Your Debugging Toolbox
This article was just updated to include an internal Microsoft tool that is now public. There are many free tools used to troubleshoot and debug software. Below I present a list of the tools that my peers and I use most of the time. Though most of the tools below are free Microsoft tools, not all...
4 Oct 2012
[PowerShell Script] PowerDbg v6.0 – Using PowerShell to Control WinDbg
Last October the latest version of the PowerDbg tool was released, version 6.0. This release has major changes. For example, it is now easier to write scripts or otherwise just hack around the debugger, and includes the PowerDbgConsole, a bootstrapper designed to make setting up an interactive PowerDbg...
28 Feb 2011
New PowerDbg – I Need Your Help
First, let me fix the title. It should be: “New PowerDbg – We Need Your Help”. I explain, a few weeks ago I received an e-mail from Piers Williams , a developer from Australia. Piers mentioned his blog article related to PowerDbg where he makes some constructive criticism. When...
25 May 2010
[PowerShell Script] PowerDbg v5.3—Using PowerShell to Control WinDbg
This version has a fix in Parse-PowerDbgDSO . Thanks to Igor Dvorkin that found the bug and suggested the fix. DOWNLOAD POWERDBG Download PowerDbg POWERDBG FILES WinDbg.PSM1 ß Starting with this version this is the only file. INSTALLATION WinDbg.PSM1 Goes...
21 Dec 2009
[PowerShell Script] Statistics from .NET Applications
This script is more a template to show you how to use PowerDbg. I must say the idea is from my teammate Aaron Barth! This script collects information from all threads running managed code and gives the user statistics by threads like: - CLR stack. - Managed objects from the stack. ...
15 Apr 2009
[PowerShell Script] PowerDbg v5.2—Using PowerShell to Control WinDbg
This version has two improvements and some scripts were changed to be compatible with this new version: - Starting on version 5.2 the log used to save the command output, enabling the communication between PowerShell and WinDbg is not used anymore. Now all communication uses memory so it’s faster...
15 Apr 2009
[PowerShell Script] PowerDbg v5.1—Using PowerShell to Control WinDbg
So, here we go again. This is a minor version with a few new cmdlets. These new cmdlets are those that we use most of the time. DOWNLOAD POWERDBG Download PowerDbg POWERDBG FILES WinDbg.PSM1 ß Contains cmdlets used to communicate with WinDbg . Microsoft.PowerShell_Profile...
19 Mar 2009
[PowerShell Script] PowerDbg v5.0—Using PowerShell to Control WinDbg
I’m very excited to present the new PowerDbg v5.0! There’s just one change, but it’s a HUGE change that makes PowerDbg extremely fast and easier to use. Let me explain: Send-PowerDbgCommand is the heart of PowerDbg . This is the cmdlet that sends information to WinDbg and retrieves information...
3 Feb 2009
[PowerShell Script] Extracting All Key/Value Pairs from a Dictionary Object
Brad Linscott, a teammate of mine since the old times of SIE , came up with a very helpful idea: find an automated way to get the key/value pairs from a Dictionary object. Moreover, Brad has a recipe that teaches how to get the key/value pair from a Dictionary using a manual approach, either using...
28 Oct 2008
[PowerShell Script] Chart and Statistics from Top 20 Objects Leaking
If you want to know the top 20 objects associated with the GC Handles that are leaking, you have manual work to do. Think about it: a) Run GCHandleLeaks and wait… it’s going to take time. b) Get the objects’ instances from the handles. c) Count and classify them. d) Get the 20 objects that...
22 Aug 2008
[PowerShell Script] Displaying the Call Stack for Inner and Hidden Exceptions
This script automates a technique I’ve been using for a long time whenever I need to see the stack for exceptions hidden in a call stack and if you are like me, you prefer to use an automated approach rather than a manual approach. I’m not going to write the technique here because Mike Stall has already...
15 Jan 2008
[PowerShell Script] Isolating the Threads Consuming High CPU
When helping my customers with scenarios in which the symptom is high CPU, I very often end up with only a dump file from the application consuming high CPU and nothing else. When you have a high CPU scenario and you have dump files, you need a Performance Monitor log in order to see the threads consuming...
16 Dec 2007
[PowerShell Script] Saving a Module from a .NET Method Call
This is my first script using the PowerDbg functions. It’s a good example of how to use PowerDbg to build your own scripts. PowerDbgScriptSaveModule . ps1 is the PowerShell version of my Windbg script Save_Module.txt Actually it does more than the previous version: it automatically saves the...
5 Sep 2007
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