I am having the same issues but its only with installing MAYA, not downloading it. I download it without issues but once I try and install it I also get a message stating that it was somehow corrupted. This happens just as it gets to the end of its installation. I know it has nothing to do with file size since its just one program. If anyone has any real answers please reply. This is driving me crazy exact messages is " Some installation files are corrupted. Please download a fresh copy and retry the installation." Like I haven't done that about 6 or 7 times already!
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I'm also having this problem but there isn't an option to download from the browser. On Firefox or Chrome. It just has one box to click to download, and it downloads in the Download manager.
I figured it out, it was because I'm using Windows 7 and I needed to Run it as 'administrator' and delete some old Maya files 🙂 Thanks for your help!