Every now and then you come across a project that is still using a super-old version of Revit (remember Revit 2017? Yeah, it was released about 5 years ago…) You might have found that your old versions of Revit have actually stopped working or stopped activating due to Autodesk license system changes.
So… how can you get access to Revit 2017 or other old Revit versions? As recent as November 2020, Autodesk enabled access as shown below:
“As on November 2020, Autodesk expanded “previous versions” back to 5 versions for all Subscription customers. https://customersuccess.autodesk.com/articles/expanding-previous-version-access-to-5-versions-back-for-all-customers
So you can use, at this point back to 2015 and next year and when the software advances to the new version in April, this will change to 2016.
There shouldn’t be any need to apply for the extra previous licenses. The seats won’t show up in the Autodesk Account however and you need to access the installers via AVA.