You will need to make sure your computer is fully updated. and perform an uninstall and reinstall of the software. Also,make sure when you uninstall that you reboot your computer before reinstalling the program.
@John_David You can download the TurboTax CD/Download installer from this page: https://turbotax.community.intuit.ca/community/product-information/help/where-can-i-download-the-cd-...
For assistance with your installation key, please message us on social media or contact us by phone.
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To talk to our phone support team, visit https://support.turbotax.intuit.ca/contact/. After entering some basic info about what you need help with, the page will give you the phone number for the team best suited to help.