We have been getting a lot of posts in our forums regarding corrupt installations and downloads. My suggestion is to use Firefox and the Browser Download instead of using the Download Manager.
In the Subscription Center, just click on the appropriate button.
If you are downloading a Trial version, just cancel out of the automatic installation of the Download Manager and you will be able to see the download using the browser option on the webpage.
If you are using the Download Manager, the downloaded Autodesk software packages are located here:
C:\Program Files\Common Files\Akamai\Cache
Thanks to Travis Nave for this suggestion.
There has been some Community Activity to use this 3rd party tool. We don't support it but it appears to work.
Instead of your normal download options, you will get this option to add it to the Download Manager and the progress bar will look like this:
Thanks to Colin Bradshaw for this tip.
Additional info can be found at this post:
Thanks to Doug Lauritsen for this tip.
Here is a demo of the process to not choose the Download Manager in Firefox: