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Asked: 2026-05-10T17:14:17+00:00

Not too long ago, I had a problem which required me to set WinDbg.exe

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Not too long ago, I had a problem which required me to set WinDbg.exe as the default post-mortem debugger. Now that I’ve fixed that and am back doing normal work, it would be really nice if I could set VS to be my default post-mortem debugger. How does one go about doing this?

Also, how do I make VS attach to an already existing session? That is, I’ve got my VS project open in one window, and a command line open where I’m launching my program from. If the program crashes, how do I get VS to figure out to attach the debugger to the active line in the project that’s already open?

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1 Answer

  1. from the Microsoft support page:

    1. Start Registry Editor and locate the following Registry subkey in the HKEY_LOCAL_MACHINE subtree: \SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\AEDEBUG

    2. Select the Debugger value.

    3. On the Edit menu, click String.

    • To use the Windows debugger, type windbg -p %ld -e %ld.
    • To use Visual C++ 4.2 or earlier, type msvc -p %ld -e %ld. *To use Visual C++ 5.0 or later, type msdev.exe -p %ld -e %ld.
    • To use Dr. Watson, type drwtsn32.exe -p %ld -e %ld. You can also make Dr. Watson the default debugger by running this command:drwtsn32.exe -i.
    1. Choose OK and exit Registry Editor.
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