Thank you for your question.
If you would like, you can uninstall previous years' versions of TurboTax without affecting the functionality of your current year's software.
If you would like to open and view previous years' tax returns, you will need to re-install the software for those years. You can do this at any time using the link below. Please be sure to retain your installation Key Code for re-installation.
https://turbotax.community.intuit.ca/questions/1190054-can-i-download-a-copy-of-turbotax-from-the-in...
