As of August 2019, Autodesk no longer supports the automatic re-authorization of versions 2010 and older. If your license needs a "check-in," it may fail to activate. Introducing Autocad 2009
Any file named something like AutoCAD 2009 Portable -g8ni 92- is almost certainly a created by a third party. Using such software comes with serious risks, which I'll outline below. AutoCAD 2009 Portable -g8ni 92-