Hello there, I know this post is a bit old but I´m having the same problem with the installation. Already tried to install several versions and either appears the corrupted file error or for the newer versions like 2013 2014, it doesn´t even start the installation manager. I have already turned off the firewall and antivirus but still can´t manage to install a simple 2010 version of the Autocad. And yes, all my operational system attends the prerequisites. Its an w7 premium, 64 bits, 4gb. I´d appreciate a response. Thanks
Can you please confirm what download delivery methods you've tried (Install Now, Download Now, Browser Download)? Have you tried turning off your firewall and antivirus software temporarily?