HydraCARDs | Launching AutoCAD causes a hard system crash as it loads some HydraCAD plugins, the last one seen is HCADMainBase.arx. The machine crashes every time — it does not reach the AutoCAD interface. When HydraCAD is uninstalled, AutoCAD launches and runs normally with no crashes.<o:p></o:p>

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Card 1461

AutoCAD Based Launching HydraCAD (Ribbon/Toolbar/Location)

Error Type: Crash

Description:

Launching AutoCAD causes a hard system crash as it loads some HydraCAD plugins, the last one seen is HCADMainBase.arx. The machine crashes every time — it does not reach the AutoCAD interface. When HydraCAD is uninstalled, AutoCAD launches and runs normally with no crashes.

Solutions:

Cause:

Windows Virtualization-Based Security (VBS) seems to be the culprit

Solution:

Disabling Intel Virtualization Technology (VT-x) in the BIOS - which turns off Windows Virtualization-Based Security (VBS) / the Hypervisor - stops the crash completely. AutoCAD now launches and runs with the HydraCAD plugins loaded, no blue screen.

Updated: June 11, 2026, 10:10 a.m. Created: June 11, 2026, 10:10 a.m.