If the error persists, a "Clean Uninstall" is necessary to remove residual registry keys and files. Uninstall: Control Panel to uninstall AutoCAD and its components. Microsoft Program Install and Uninstall Troubleshooter to ensure all fragments are gone. Disable Security:

: The installer may fail to create the necessary language folder (e.g., ) where the acadres.dll Security Software Interference

: Choose AutoCAD DWG Launcher and check the box "Always use this app to open .dwg files.". 2. Repair or Reinstall AutoCAD