# Sysinternals Coreinfo v4.0, NotMyFault v4.30, and Process Explorer v17.09

- Product: Sysinternals (https://whatsnew.fyi/product/sysinternals)
- Vendor: Microsoft
- Date: 2025-12-17
- Original notes: https://techcommunity.microsoft.com/t5/sysinternals-blog/coreinfo-v4-0-notmyfault-v4-30-and-process-explorer-v17-09/ba-p/4478567
- Permalink: https://whatsnew.fyi/product/sysinternals/releases/2025-12-17-coreinfo-v4.0-notmyfault-v4.30-and-process-explor
- Labels: Platforms: Windows

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Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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Coreinfo v4.0 This update to Coreinfo, a tool that reports processor, socket, NUMA memory, and cache topology of a system, as well as processor features supported, now includes a GUI version and adds…

- **added** — Add GUI version to Coreinfo
- **added** — Add checks for features present in modern CPUs to Coreinfo
- **added** — Add Arm64 support to NotMyFault
- **added** — Add new crash type HalTimerWatchdogTriggerSystemReset to NotMyFault
- **fixed** — Fix image type bug in Process Explorer
- **changed** — Enable assemblies tab for .NET processes in Process Explorer

[Coreinfo v4.0](https://learn.microsoft.com/sysinternals/downloads/coreinfo)
This update to Coreinfo, a tool that reports processor, socket, NUMA memory, and cache topology of a system, as well as processor features supported, now includes a GUI version and adds checks for features present in modern CPUs.
[NotMyFault v4.30](https://learn.microsoft.com/sysinternals/downloads/notmyfault)
This update to NotMyFault, a tool that can crash, hang, and cause kernel memory leaks on the Windows system, adds Arm64 support and a new crash type for HalTimerWatchdogTriggerSystemReset.
[Process Explorer v17.09](https://learn.microsoft.com/sysinternals/downloads/process-explorer)
This update to Process Explorer, an advanced process, DLL, and handle viewing utility, fixes an image type bug, and enables the assemblies tab for .NET processes.