If the above steps fail, you likely need a clean install. This is more thorough than a standard uninstall. Remove AutoCAD 2021 via the Control Panel.
To avoid encountering the "Problem loading Acadres.dll resource file" error in the future, make sure to: problem loading acadres.dll resource file autocad 2021
Navigate to: HKEY_CURRENT_USER\Software\Autodesk\DwgCommon\shellex\apps\F29F85E0-4FF9-1068-AB91-08002B27B3D9: AutoCAD . If the above steps fail, you likely need a clean install
Delete the existing AutoCAD 2021 shortcut from your desktop. Go to C:\Program Files\Autodesk\AutoCAD 2021\acad.exe , right-click it, and select Send to > Desktop (create shortcut) 3. Disable Antivirus/Security Software: If the above steps fail
If the Repair option fails or is greyed out, you should perform a clean reinstall.