The TurboTax desktop CD/Download software for tax year 2017 does not support the Windows Vista OS.
See this TurboTax support FAQ for Windows minimum system requirements - https://ttlc.intuit.com/questions/1901571-minimum-system-requirements-for-turbotax-windows-software
To request a refund of the software purchased from TurboTax use this website - https://support.turbotax.intuit.com/forms/refund-request.jsp
Go to this TurboTax website for the online editions - https://turbotax.intuit.com/personal-taxes/online/
