A client-side Minecraft mod (Fabric / Forge / NeoForge) that prevents Windows from showing the "Not Responding" dialog during high-load operations such as modpack startup, texture reloading, world loading, and language loading.
Compared to the legacy edition, the features themselves have not evolved. What changed is the toolchain: combining Architectury API with Stonecutter made multi-version and multi-loader support far easier, which in turn makes active ongoing development practical.
Uses DisableProcessWindowsGhosting() — a Win32 API provided by Microsoft for exactly this use case — to permanently disable OS-level window ghosting for the process. Where available, this is applied early (e.g. via Forge/NeoForge ITransformationService or Fabric preLaunch) before most Minecraft code runs — including the early loading window — so coverage starts as soon as possible.
A secondary heartbeat thread (PostMessage(WM_NULL)) runs as a lightweight fallback throughout the game session.
| Layer | Mechanism | When Applied |
|---|---|---|
| 1 (Primary) | DisableProcessWindowsGhosting() |
Before the loading window appears |
| 2 (Fallback) | PostMessage(WM_NULL) thread |
From client setup until shutdown |
- Does not call any GLFW functions from background threads
- Does not hook
WindowProcor intercept messages - Compatible with Embeddium(Rubidium), ModernFix ...etc optimization mods
- Minecraft 1.16.5 ~ 26.1.2 Fabric/Forge/NeoForge
- Architectury API
- Client-side only
This mod works by deceiving the Windows OS about the process responsiveness using heartbeat signals (PostMessage(WM_NULL)). While this prevents false "Not Responding" dialogs during legitimate high-load operations, it has a critical drawback:
If a genuine crash, hang, or serious problem occurs, you may not notice it immediately. The mod will continue to report the process as "alive" to Windows, potentially delaying your awareness of actual issues.
- Stable Modpacks: Safe to use. If your modpack is already well-optimized and stable, this mod prevents frustrating false-positive notifications.
- Unstable/Experimental Configurations: Use with caution. You risk missing early warning signs of real problems. Consider monitoring logs actively and watching for actual freezes or performance degradation rather than relying on the OS dialog to alert you.
- Development/Testing: Not recommended. You want immediate feedback when something breaks.
Use this mod only in well-tested, stable configurations where you're confident the underlying modpack is functioning correctly. Do not rely on it as a substitute for proper troubleshooting in problematic setups.