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AutoCAD Based Launching HydraCAD (Ribbon/Toolbar/Location)
Description:
Windows 11 Smart App Control is blocking HCADLoader.arx because Windows says it cannot confirm who published the file. HydraCAD then gives Security Error and fails to load its functions.
arx files are not digitally signed.
Install Version V57.09 or V58.03 or newer.Turn off SAC for now.