Autodesk has officially stopped activations for versions 2010 and older. Even with the original installer, you will likely be unable to license the software.
Hosts an ISO image of the original Autodesk Maya 2010 DVD. Autodesk Maya 2010 Free Download
If you need 2010 for legacy project recovery or research, some community archives maintain copies of the installation media: Autodesk Maya 2010 Free Download