Downloading and fixing older versions of Archicad like Archicad 13 Start Edition 2009
Graphisoft offers (a free, limited BIMx viewer) and educational licenses for the latest version. If you need to recover old data: archicad+2009+download+fix+best
Right-click the Setup.exe > > Compatibility tab. Downloading and fixing older versions of Archicad like
checkbox in the Open dialog. If it still fails, rename your backup and try opening that. x64 Compatibility archicad+2009+download+fix+best