On 10/14/23 I was able to get both Turbotax Home & Business 2014 and 2015 to work on my Mac by booting up on an old hard drive that has Mac OS X 10.12.6 (Sierra). I thought to try this when I read the post by macuser_22 that stated, "Apple made a change in the OSX 10.13.3 update that caused an *Apple* java function to crash when reading a Java script that TurboTax used in 2014 and 2015. That was a Apple problem and not TurboTax but Apple has never fixed that. TurboTax at one time has a fix script to remove that java scrip but now that 2014 and 2015 are no longer supported they have deleted that script." Mac OS X 10.12.6 (Sierra) was prior to that Java update, and was able to run both the Turbotax 2014 and 2015 versions.
