Saw this error in the log and confirmed that the link does not work for me:
An error occurred WebClient reported an error during download (https://upload2.delivery.autodesk.com/WebInstall3StubGUI-1768212594266.exe): The remote server returned an error: (404) Not Found. [System.Net.WebException] HResult: -2146233079
Thanks for letting us know. The URL keeps expiring and we are working on a way around that now!
We've now fixed this issue, thanks for letting us know!