TT Premier 2022 and earlier were 32-bit and I had ZERO problems even under Windows 64-bit OS. 2023 programs are all 64-bit and will only run on Windows 64-bit OS. Windows 10 64-bit has extra security and I need to run TT 2023 as an administrator or else the program will close. Starting a new return will close the program. Also, Help -> About -> Version will close the program. Perhaps your program is doing the same. Try to right-click the link and choose "Run as administrator". If it works, you can set the EXE to always run as administrator. Yes, you will get the pop up window asking if you are sure.