nuget install Microsoft.Windows.Debugging.Tools -Version 10.0.2409.5
cd Microsoft.Windows.Debugging.Tools.10.0.2409.5\tools\x64
.\ntsd.exe -??

In the fast-paced world of Windows debugging and system driver management, few tools are as quietly essential as the NT Symbolic Debugger (NTSD). For months, developers and security researchers using version 24.20a of the NTSD toolchain have been grappling with a vexing set of issues ranging from symbol loading failures to memory breakpoint inconsistencies. That all changes with the new release NTSD 24 20a fix – a long-awaited update that addresses critical bugs, enhances kernel-mode debugging stability, and reintroduces support for modern Windows 11 architectures.

In this article, we will dissect everything you need to know about this new release: what was broken, what has been fixed, how to deploy the patch, and why this matters for your debugging workflow.

Fix: The fix changes DAC loading. Use !sym noisy and .cordll -ve -u -l to force correct version.

Version: 24.20a
Release date: [Insert date]
Previous version: 24.20

[Insert link or command — e.g., “via WinDbg Preview installer / Chocolatey / internal repo”]

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The newly released patch (build number 24.20a.2409.5 – sometimes referred to as the "Stability Refresh") directly targets the above pain points. Microsoft’s debugging team has released the update via the Windows Hardware Dev Center and NuGet’s Microsoft.Windows.Debugging.Tools package.

Here is the official changelog for the new release NTSD 24 20a fix: