Are you on a Mac?

There is this error but it's for OS 10.13.4 but works for 10.14 also

https://ttlc.intuit.com/questions/4477509-turbotax-2014-and-2015-for-mac-crashes-on-launch

I need to file my 2015 income taxes

---

@Shalonds wrote:

I need to file my 2015 income taxes

---

Do you want to use TurboTax to prepare your 2015 income tax return? If so, you can purchase a TurboTax desktop (installed) product at the following link.

https://turbotax.intuit.com/personal-taxes/past-years-products/2015/

@Shalonds 

You have been given the link to download the 2015 software.  Be aware that it is too late to receive a tax refund for 2015, even if the tax form shows a refund.  You are too late to receive that refund,  But if you owe tax due, then the IRS wants to be paid.  TurboTax will not calculate your late filing penalty or the interest owed.  The IRS will calculate that and bill you later.