If you have a perpetual license with an Autodesk (Maya, 3ds Max, AutoCadd, Revit etc) product you might want to be aware of the changes soon to come. They are trying to move everyone to subscription and if you still have a perpetual license you soon will not be able to activate it anymore. Re-activation is required if you want to move your software to anther machine, or if you upgrade part of your machine such as CPU, MB, GPU which breaks the license.
So you need to decide now what version you will stick with (you can only keep the last activated version) and what hardware you plan on using for the duration of your use of the software. More info here:
https://www.aplocalas.com/
or
https://forums.autodesk.com/
but you really have to dig on the autodesk site to find the info.

They could really shoot themselves in the foot doing the Adobe trick of cashcowing users into subscription and holding them hostage.

Breaking a perpetual licence is in essence breaking a moral if not actual contract although the EULA fine print nearly always provides an out.

People can develop strange attitudes and the sense of entitled betrayal is one of them. With the re-emergence of DaVinci Resolve as a viable post-production suite, until Adobe can undertake a takeover and shut Resolve down, Adobe's Premiere Pro C.C subscription model risks becoming a feather duster.

People do not lightly forgive, can have abiding resentful memories and wait patiently for the time when they can stick it to an entity which betrays them. With Fusion blended into the DaVinci Resolve suite, Autodesk may discover the fearther duster as well.