: If a repair fails, perform a "Clean Uninstall" of all Autodesk products and reinstall from a fresh download via your Autodesk Account Check Antivirus

C:\Program Files\Autodesk\AutoCAD 2023\

These errors generally stem from:

You can also compare the file hash using PowerShell:

She opened Windows Security → Protection History. Sure enough, at 2:17 AM, a "severe threat" had been detected: