Does Turbo Tax work on Windows 8.1. You only mention Windows 8 / Windows 7 / Vista / XP1
No it won't. and I've reported this. Data entry can suddenly be a problem, and simply unchecking a box like "Are you Canadian?" will prevent checking that box again. Only the Easy Step method gets around this glitch with using the Forms Method on Win 8.1. There isn't a problem on Win 7.