Try uninstalling the program then reinstalling it ... then update the program before you start or continue the return.
Troubleshoot install for Windows - https://ttlc.intuit.com/community/troubleshooting/help/troubleshoot-installing-and-running-turbotax-...
You can uninstall and then reinstall the software using the procedure in this TurboTax support FAQ - https://ttlc.intuit.com/questions/1901002-reinstall-turbotax-windows
You may also want to try a forced uninstall. See this TurboTax support FAQ - https://ttlc.intuit.com/questions/1901054-forcefully-uninstall-and-reinstall-turbotax
