If you are running a product installer and simply entered the wrong license type (network or stand-alone) by mistake, use the Back button to return to the Product Information dialog, and change the license type.
If you want to change the license type for an installed product, contact your Autodesk reseller or license supplier to review any business requirements and to obtain the new license and serial number. Then uninstall your product and run a new install to change the license type and enter the new serial number.
For Media & Entertainment products 3ds Max, Maya, MotionBuilder, Mudbox, and Softimage, a procedure is available for switching a stand-alone license to a network license. Instructions are provided in the supplements for these products in Autodesk Installation Help.