Try downloading it again using a different browser and turn off your antivirus. It doesn't like IE11.
If you need to download your program…..
https://ttlc.intuit.com/community/installing/help/how-do-i-download-the-software-i-purchased-at-turb...
Access your downloads here
https://shop.turbotax.intuit.com/commerce/account/secure/login.jsp?pagecontext=download
Here's the support article to find the Windows download
https://ttlc.intuit.com/community/installing/help/find-your-turbotax-for-windows-software-download/0...
If you are having trouble downloading to Windows
https://ttlc.intuit.com/community/installing/help/troubleshoot-turbotax-for-windows-download-issues/...
